新联系人 class 和错误 - 应用已停止 - Android
New contacts class and error - app was stopped - Android
我在 Android 项目中创建了一个新的 class，它正在读取 phone 书中的联系人。这个class是：
public class KontaktBook extends Activity {
public void displayContacts() {
Toast.makeText(KontaktBook.this, "Name:", Toast.LENGTH_SHORT).show();
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(
cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phoneNo = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Toast.makeText(KontaktBook.this, "Name: " + name + ", Phone No: " + phoneNo, Toast.LENGTH_SHORT).show();
}
pCur.close();
}
}
}
}
}
在主要 class 中，我创建了新的 KontaktBook 对象，如下所示：
KontaktBook kont = new KontaktBook();
kont.displayContacts();
当我把这个程序放入 Android phone 并引入 kont.displayContacts();
我在 phone 中收到错误："Unfortunately,aplication was stopped"。
哪里会出问题？
当我将此片段（在方法 displayContacts() 中）放入 Main Class (MainActivity) 时，问题消失了 - 没问题。
PS
Logcat 显示：
08-10 13:32:15.080 11584-11584/com.example.proj E/dalvikvm﹕ could not disable core file generation for pid 11584: Operation not permitted
08-10 13:32:15.200 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:32:15.200 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:32:15.200 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:32:15.200 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:32:15.200 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:32:15.200 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:32:15.210 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:32:15.210 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:32:15.210 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:32:15.210 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:32:15.210 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:32:15.210 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:15.220 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:32:15.220 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:15.350 11584-11584/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:32:15.350 11584-11584/com.example.proj W/linker﹕ error:
08-10 13:32:42.140 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:32:42.140 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:32:42.140 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:32:42.140 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:32:42.150 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:32:42.150 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:32:42.160 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:32:42.160 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:32:42.160 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:32:42.160 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:32:42.160 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:32:42.170 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:42.170 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:32:42.170 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:42.330 12032-12032/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:32:42.330 12032-12032/com.example.proj W/linker﹕ error:
08-10 13:32:42.990 12032-12032/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:39:02.080 12396-12396/com.example.proj E/dalvikvm﹕ could not disable core file generation for pid 12396: Operation not permitted
08-10 13:39:02.210 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:39:02.210 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:39:02.210 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:39:02.210 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:39:02.220 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:39:02.220 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:39:02.230 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:39:02.230 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:39:02.230 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:39:02.230 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:39:02.250 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:39:02.250 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:02.250 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:39:02.250 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:02.450 12396-12396/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:39:02.450 12396-12396/com.example.proj W/linker﹕ error:
08-10 13:39:22.320 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:39:22.320 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:39:22.320 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:39:22.330 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:39:22.330 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:39:22.330 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:39:22.340 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:39:22.340 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:39:22.340 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:39:22.340 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:39:22.350 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:39:22.350 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:22.350 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:39:22.350 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:22.500 12620-12620/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:39:22.500 12620-12620/com.example.proj W/linker﹕ error:
08-10 13:39:23.830 12620-12620/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:39:25.670 12620-12620/com.example.proj I/Process﹕ Sending signal. PID: 12620 SIG: 9
08-10 13:40:00.660 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:40:00.660 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:40:00.660 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:40:00.660 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:40:00.670 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:40:00.670 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:40:00.680 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:40:00.680 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:40:00.680 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:40:00.680 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:40:00.690 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:40:00.690 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:40:00.690 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:40:00.690 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:40:00.800 12848-12848/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:40:00.800 12848-12848/com.example.proj W/linker﹕ error:
08-10 13:40:02.170 12848-12848/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:52:03.510 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:52:03.510 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:52:03.510 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:52:03.510 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:52:03.510 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:52:03.510 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:52:03.530 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:52:03.530 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:52:03.530 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:52:03.530 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:52:03.540 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:52:03.540 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:52:03.540 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:52:03.540 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:52:03.750 13264-13264/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:52:03.750 13264-13264/com.example.proj W/linker﹕ error:
08-10 13:52:16.480 13264-13264/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:57:16.560 13264-13264/com.example.proj I/Process﹕ Sending signal. PID: 13264 SIG: 9
您必须使用 Intent 来启动 KontaktBook activity，并且您可以在 KontaktBook Activity 的 Create 方法中调用 display Contacts 方法，因为您已将其声明为 Activity。从 KontaktBook class 中删除扩展 Activity 以直接从 Main Activity.
调用显示联系人方法
我在 Android 项目中创建了一个新的 class，它正在读取 phone 书中的联系人。这个class是：
public class KontaktBook extends Activity {
public void displayContacts() {
Toast.makeText(KontaktBook.this, "Name:", Toast.LENGTH_SHORT).show();
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI,
null, null, null, null);
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur.getString(cur.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer.parseInt(cur.getString(
cur.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
Cursor pCur = cr.query(
ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = ?",
new String[]{id}, null);
while (pCur.moveToNext()) {
String phoneNo = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
Toast.makeText(KontaktBook.this, "Name: " + name + ", Phone No: " + phoneNo, Toast.LENGTH_SHORT).show();
}
pCur.close();
}
}
}
}
}
在主要 class 中，我创建了新的 KontaktBook 对象，如下所示：
KontaktBook kont = new KontaktBook();
kont.displayContacts();
当我把这个程序放入 Android phone 并引入 kont.displayContacts();
我在 phone 中收到错误："Unfortunately,aplication was stopped"。
哪里会出问题？
当我将此片段（在方法 displayContacts() 中）放入 Main Class (MainActivity) 时，问题消失了 - 没问题。
PS Logcat 显示：
08-10 13:32:15.080 11584-11584/com.example.proj E/dalvikvm﹕ could not disable core file generation for pid 11584: Operation not permitted
08-10 13:32:15.200 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:32:15.200 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:32:15.200 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:32:15.200 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:32:15.200 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:32:15.200 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:32:15.210 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:32:15.210 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:32:15.210 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:32:15.210 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:32:15.210 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:32:15.210 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:15.220 11584-11584/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:32:15.220 11584-11584/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:15.350 11584-11584/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:32:15.350 11584-11584/com.example.proj W/linker﹕ error:
08-10 13:32:42.140 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:32:42.140 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:32:42.140 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:32:42.140 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:32:42.150 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:32:42.150 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:32:42.160 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:32:42.160 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:32:42.160 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:32:42.160 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:32:42.160 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:32:42.170 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:42.170 12032-12032/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:32:42.170 12032-12032/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:32:42.330 12032-12032/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:32:42.330 12032-12032/com.example.proj W/linker﹕ error:
08-10 13:32:42.990 12032-12032/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:39:02.080 12396-12396/com.example.proj E/dalvikvm﹕ could not disable core file generation for pid 12396: Operation not permitted
08-10 13:39:02.210 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:39:02.210 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:39:02.210 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:39:02.210 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:39:02.220 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:39:02.220 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:39:02.230 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:39:02.230 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:39:02.230 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:39:02.230 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:39:02.250 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:39:02.250 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:02.250 12396-12396/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:39:02.250 12396-12396/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:02.450 12396-12396/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:39:02.450 12396-12396/com.example.proj W/linker﹕ error:
08-10 13:39:22.320 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:39:22.320 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:39:22.320 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:39:22.330 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:39:22.330 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:39:22.330 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:39:22.340 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:39:22.340 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:39:22.340 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:39:22.340 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:39:22.350 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:39:22.350 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:22.350 12620-12620/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:39:22.350 12620-12620/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:39:22.500 12620-12620/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:39:22.500 12620-12620/com.example.proj W/linker﹕ error:
08-10 13:39:23.830 12620-12620/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:39:25.670 12620-12620/com.example.proj I/Process﹕ Sending signal. PID: 12620 SIG: 9
08-10 13:40:00.660 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:40:00.660 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:40:00.660 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:40:00.660 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:40:00.670 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:40:00.670 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:40:00.680 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:40:00.680 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:40:00.680 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:40:00.680 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:40:00.690 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:40:00.690 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:40:00.690 12848-12848/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:40:00.690 12848-12848/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:40:00.800 12848-12848/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:40:00.800 12848-12848/com.example.proj W/linker﹕ error:
08-10 13:40:02.170 12848-12848/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:52:03.510 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onNestedScrollAccepted, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onNestedScrollAccepted
08-10 13:52:03.510 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12214: Landroid/view/ViewGroup;.onNestedScrollAccepted (Landroid/view/View;Landroid/view/View;I)V
08-10 13:52:03.510 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.view.ViewGroup.onStopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.onStopNestedScroll
08-10 13:52:03.510 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 12220: Landroid/view/ViewGroup;.onStopNestedScroll (Landroid/view/View;)V
08-10 13:52:03.510 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.support.v7.internal.widget.ActionBarOverlayLayout.stopNestedScroll, referenced from method android.support.v7.internal.widget.ActionBarOverlayLayout.setHideOnContentScrollEnabled
08-10 13:52:03.510 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 9785: Landroid/support/v7/internal/widget/ActionBarOverlayLayout;.stopNestedScroll ()V
08-10 13:52:03.530 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getChangingConfigurations, referenced from method android.support.v7.internal.widget.TintTypedArray.getChangingConfigurations
08-10 13:52:03.530 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 392: Landroid/content/res/TypedArray;.getChangingConfigurations ()I
08-10 13:52:03.530 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.TypedArray.getType, referenced from method android.support.v7.internal.widget.TintTypedArray.getType
08-10 13:52:03.530 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 414: Landroid/content/res/TypedArray;.getType (I)I
08-10 13:52:03.540 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawable, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawable
08-10 13:52:03.540 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 355: Landroid/content/res/Resources;.getDrawable (ILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:52:03.540 13264-13264/com.example.proj I/dalvikvm﹕ Could not find method android.content.res.Resources.getDrawableForDensity, referenced from method android.support.v7.internal.widget.ResourcesWrapper.getDrawableForDensity
08-10 13:52:03.540 13264-13264/com.example.proj W/dalvikvm﹕ VFY: unable to resolve virtual method 357: Landroid/content/res/Resources;.getDrawableForDensity (IILandroid/content/res/Resources$Theme;)Landroid/graphics/drawable/Drawable;
08-10 13:52:03.750 13264-13264/com.example.proj W/linker﹕ library "libmaliinstr.so" not found
08-10 13:52:03.750 13264-13264/com.example.proj W/linker﹕ error:
08-10 13:52:16.480 13264-13264/com.example.proj W/dalvikvm﹕ threadid=1: thread exiting with uncaught exception (group=0x41774c50)
08-10 13:57:16.560 13264-13264/com.example.proj I/Process﹕ Sending signal. PID: 13264 SIG: 9
您必须使用 Intent 来启动 KontaktBook activity，并且您可以在 KontaktBook Activity 的 Create 方法中调用 display Contacts 方法，因为您已将其声明为 Activity。从 KontaktBook class 中删除扩展 Activity 以直接从 Main Activity.
调用显示联系人方法