getContentResolver 与 AsyncTask
getContentResolver with AsyncTask
我是 android 的新手，所以正在学习 AsyncTask 库。
我想在 AsyncTask 中对用户联系人列表执行操作。因为这是一个漫长的过程，所以我不希望用户等到它完成。但是每当我 运行 它时，它都会关闭我的应用程序，在不调用 getContentResolver 方法的情况下，我的 AsyncTask 方法工作正常。
我不知道我的 getContentResolver 方法有什么问题。
我的 AsyncTask 文件是，
public class clsAsyncTask extends AsyncTask<TextView, String, Boolean> {
TextView txtView;
Boolean finalStatus = false;
@Override
protected Boolean doInBackground(TextView... params) {
if(params.length > 0){
txtView = params[0];
saveContacts contacts = new saveContacts("");
contacts.onHandleIntent(new Intent());
publishProgress("Step 2 cleared");
finalStatus = true;
}
return finalStatus;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(Boolean aBoolean) {
if(aBoolean){
publishProgress("All cleared");
}else{
publishProgress("Error accured");
}
}
@Override
protected void onProgressUpdate(String... values) {
txtView.setText(values[0]);
}
}
我的 getContentResolver 文件是，
public class saveContacts extends IntentService {
public saveContacts(String name) {
super(name);
}
@Override
protected void onHandleIntent(Intent intent) {
StringBuffer sb = new StringBuffer();
sb.append("......Contact Details.....");
String name = "";
String phoneNumber="";
String emailId = "";
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
sb.append("total = " + phones.getCount());
while (phones.moveToNext())
{
name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
sb.append("\nEmail: " + name + " phoneNumber: " + phoneNumber);
}
phones.close();
}
}
我的主要 activity 调用异步方法如下所示，
public class MainActivity extends ActionBarActivity {
TextView txtView;
clsAsyncTask _AsyncTaskWorker;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtView = (TextView) findViewById(R.id.txt_view);
txtView.setText("Execution start");
_AsyncTaskWorker = new clsAsyncTask();
_AsyncTaskWorker.execute(txtView);
}
}
Logcat在错误部分，它显示如下，
07-11 09:02:24.630 664-705/? E/ElectronBeam﹕ Can not update rotation!
07-11 09:02:24.946 664-705/? E/ElectronBeam﹕ Can not update rotation!
07-11 09:02:26.295 4384-4384/? E/InitDefaultSoftInfo﹕ i=1defaultresolveinfo.size():2
07-11 09:02:26.295 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.327 735-735/? E/KeyguardUpdateMonitor﹕ Object tried to add another callback
java.lang.Exception: Called by
at com.android.keyguard.KeyguardUpdateMonitor.registerCallback(KeyguardUpdateMonitor.java:1176)
at com.android.keyguard.KeyguardSelectorView.onResume(KeyguardSelectorView.java:397)
at com.android.keyguard.KeyguardHostView.onScreenTurnedOn(KeyguardHostView.java:1311)
at com.android.keyguard.KeyguardViewManager.onScreenTurnedOn(KeyguardViewManager.java:576)
at com.android.keyguard.KeyguardViewMediator.handleNotifyScreenOn(KeyguardViewMediator.java:1933)
at com.android.keyguard.KeyguardViewMediator.access00(KeyguardViewMediator.java:132)
at com.android.keyguard.KeyguardViewMediator.handleMessage(KeyguardViewMediator.java:1539)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5341)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
at dalvik.system.NativeStart.main(Native Method)
07-11 09:02:26.343 4384-4384/? E/InitDefaultSoftInfo﹕ i=2defaultresolveinfo.size():3
07-11 09:02:26.343 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.351 4384-4384/? E/InitDefaultSoftInfo﹕ i=3defaultresolveinfo.size():4
07-11 09:02:26.351 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.356 664-664/? E/﹕ Could not open '/data/data/hotplug/cmd'
07-11 09:02:26.356 664-664/? E/﹕ error : 2, No such file or directory
07-11 09:02:26.440 4384-4384/? E/InitDefaultSoftInfo﹕ i=4defaultresolveinfo.size():5
07-11 09:02:26.440 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.700 4384-4384/? E/InitDefaultSoftInfo﹕ i=6defaultresolveinfo.size():7
07-11 09:02:26.700 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.814 4384-4384/? E/InitDefaultSoftInfo﹕ i=7defaultresolveinfo.size():8
07-11 09:02:26.814 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.944 143-30185/? E/AudioMTKHardware﹕ setCommonParameters() still have param.size() = 1, remain param = "screen_state=on"
07-11 09:02:28.333 664-664/? E/RemoteViews﹕ ANR Warning,RemoteViews can only be used once ,if not ,it may cause ANR in hosts such as Laucher,SystemUI. keys for search <ANR Exception MSG History>
07-11 09:02:28.802 858-1274/? E/CellLocation﹕ create GsmCellLocation
07-11 09:02:29.049 858-1274/? E/CellLocation﹕ create GsmCellLocation
07-11 09:02:29.514 973-1156/? E/ActivityThread﹕ Failed to find provider info for com.gionee.account
07-11 09:02:30.202 16221-16221/? E/PhotosPlugin﹕ Loading PhotosPlugin
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:32.476 16165-16241/keval.asynctask E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
Process: keval.asynctask, PID: 16165
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask.done(AsyncTask.java:300)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: java.lang.NullPointerException
at android.content.ContextWrapper.getContentResolver(ContextWrapper.java:99)
at keval.asynctask.saveContacts.onHandleIntent(saveContacts.java:26)
at keval.asynctask.clsAsyncTask.doInBackground(clsAsyncTask.java:24)
at keval.asynctask.clsAsyncTask.doInBackground(clsAsyncTask.java:14)
at android.os.AsyncTask.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ appName=keval.asynctask, acAppName=/system/bin/surfaceflinger
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ 0
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ appName=keval.asynctask, acAppName=/system/bin/surfaceflinger
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ 0
07-11 09:02:32.889 664-684/? E/﹕ Could not open '/data/data/hotplug/cmd'
07-11 09:02:32.889 664-684/? E/﹕ error : 2, No such file or directory
07-11 09:02:33.077 4384-4384/? E/InitDefaultSoftInfo﹕ i=1defaultresolveinfo.size():2
07-11 09:02:33.077 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.093 4384-4384/? E/InitDefaultSoftInfo﹕ i=2defaultresolveinfo.size():3
07-11 09:02:33.093 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.095 4384-4384/? E/InitDefaultSoftInfo﹕ i=3defaultresolveinfo.size():4
07-11 09:02:33.095 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.096 4384-4384/? E/InitDefaultSoftInfo﹕ i=4defaultresolveinfo.size():5
07-11 09:02:33.096 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.141 4384-4384/? E/InitDefaultSoftInfo﹕ i=6defaultresolveinfo.size():7
07-11 09:02:33.141 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.163 4384-4384/? E/InitDefaultSoftInfo﹕ i=7defaultresolveinfo.size():8
07-11 09:02:33.163 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.496 664-944/? E/﹕ Could not open '/data/data/hotplug/cmd'
07-11 09:02:33.496 664-944/? E/﹕ error : 2, No such file or directory
07-11 09:02:35.064 16307-16323/? E/chromium_android_linker﹕ UseSharedRelro: Could not use shared RELRO for libchrome.so: No pages were swapped into RELRO ashmem
07-11 09:02:35.131 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.131 16307-16323/? E/﹕ 0
07-11 09:02:35.131 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.131 16307-16323/? E/﹕ 0
07-11 09:02:35.229 1003-1003/? E/NetworkScheduler.SchedulerReceiver﹕ Invalid parameter app
07-11 09:02:35.229 1003-1003/? E/NetworkScheduler.SchedulerReceiver﹕ Invalid package name : Perhaps you didn't include a PendingIntent in the extras?
07-11 09:02:35.300 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.301 16307-16323/? E/﹕ 0
07-11 09:02:35.301 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.301 16307-16323/? E/﹕ 0
07-11 09:02:35.325 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.325 16307-16323/? E/﹕ 0
07-11 09:02:35.325 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.325 16307-16323/? E/﹕ 0
07-11 09:02:36.016 16370-16370/? E/﹕ appName=com.google.android.apps.magazines, acAppName=/system/bin/surfaceflinger
07-11 09:02:36.016 16370-16370/? E/﹕ 0
07-11 09:02:36.016 16370-16370/? E/﹕ appName=com.google.android.apps.magazines, acAppName=/system/bin/surfaceflinger
07-11 09:02:36.016 16370-16370/? E/﹕ 0
07-11 09:02:36.791 16422-16440/? E/NativeCrypto﹕ ssl=0x607e57a8 cert_verify_callback x509_store_ctx=0x610ad8c0 arg=0x0
07-11 09:02:36.791 16422-16440/? E/NativeCrypto﹕ ssl=0x607e57a8 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_RSA
07-11 09:02:36.813 16470-16470/? E/dalvikvm﹕ Could not find class 'com.amazon.device.messaging.ADM', referenced from method com.appboy.Appboy.<init>
07-11 09:02:37.291 664-1595/? E/ActivityManager﹕ Service ServiceRecord{42d9f2b0 u0 com.google.android.youtube/com.google.android.apps.youtube.app.offline.transfer.OfflineTransferService} in process ProcessRecord{42c8a980 15786:com.google.android.youtube/u0a91} not same as in map: null
07-11 09:02:37.348 16470-16542/? E/NativeCrypto﹕ ssl=0x62875cc0 cert_verify_callback x509_store_ctx=0x6274a940 arg=0x0
07-11 09:02:37.348 16470-16542/? E/NativeCrypto﹕ ssl=0x62875cc0 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_RSA
07-11 09:02:37.453 1003-1003/? E/AuthorizationBluetoothService﹕ Proximity feature is not enabled.
07-11 09:02:37.456 16470-16532/? E/NativeCrypto﹕ ssl=0x629948f8 cert_verify_callback x509_store_ctx=0x623a1940 arg=0x0
07-11 09:02:37.456 16470-16532/? E/NativeCrypto﹕ ssl=0x629948f8 cert_verify_callback calling verifyCertificateChain authMethod=RSA
07-11 09:02:37.482 16470-16529/? E/NativeCrypto﹕ ssl=0x628abbb0 cert_verify_callback x509_store_ctx=0x6203e940 arg=0x0
07-11 09:02:37.483 16470-16529/? E/NativeCrypto﹕ ssl=0x628abbb0 cert_verify_callback calling verifyCertificateChain authMethod=RSA
07-11 09:02:37.526 16294-16294/? E/dalvikvm﹕ Could not find class 'android.telecom.TelecomManager', referenced from method com.google.android.gms.wearable.service.y.a
07-11 09:02:37.603 858-2870/? E/MDM﹕ [67] b.run: Couldn't connect to Google API client: ConnectionResult{statusCode=API_UNAVAILABLE, resolution=null}
07-11 09:02:38.568 16572-16572/? E/dalvikvm﹕ Could not find class 'android.app.Notification$Action$Builder', referenced from method b.a
07-11 09:02:38.584 16572-16572/? E/dalvikvm﹕ Could not find class 'al', referenced from method b.a
07-11 09:02:38.586 16572-16572/? E/dalvikvm﹕ Could not find class 'an', referenced from method b.a
07-11 09:02:38.592 16572-16572/? E/dalvikvm﹕ Could not find class 'android.app.RemoteInput[]', referenced from method b.a
07-11 09:02:38.871 16572-16572/? E/WifiManager﹕ mWifiServiceMessenger == null
07-11 09:02:39.316 16572-16572/? E/WifiManager﹕ mWifiServiceMessenger == null
07-11 09:02:42.352 16422-16422/? E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.AttributionIdProvider
07-11 09:02:42.366 16422-16663/? E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.AttributionIdProvider
07-11 09:02:42.546 16422-16439/? E/NativeCrypto﹕ ssl=0x607e3ed0 cert_verify_callback x509_store_ctx=0x60f6f940 arg=0x0
07-11 09:02:42.547 16422-16439/? E/NativeCrypto﹕ ssl=0x607e3ed0 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_ECDSA
07-11 09:02:58.108 143-17153/? E/AudioMTKHardware﹕ setCommonParameters() still have param.size() = 1, remain param = "screen_state=off"
07-11 09:02:59.036 973-1156/? E/ActivityThread﹕ Failed to find provider info for com.gionee.account
07-11 09:03:00.337 664-664/? E/RemoteViews﹕ ANR Warning,RemoteViews can only be used once ,if not ,it may cause ANR in hosts such as Laucher,SystemUI. keys for search <ANR Exception MSG History>
07-11 09:03:03.056 735-735/? E/KeyguardHostView﹕ KeyguardHostView()
我已经在清单文件中添加了所有互联网和联系人读取权限。
请告诉我需要进行哪些更改才能使其正常工作。
谢谢。
您遇到 NPE（又名 NullPointerException）是因为您手动创建了 IntentService，这是一件坏事：saveContacts contacts = new saveContacts("");
这里是关于使用 IntentServices 的tutorial。
或者在您的情况下，将代码移出 onHandleIntent 并将其直接放入 doInBackground.
可能是有意义的
我是 android 的新手，所以正在学习 AsyncTask 库。 我想在 AsyncTask 中对用户联系人列表执行操作。因为这是一个漫长的过程，所以我不希望用户等到它完成。但是每当我 运行 它时，它都会关闭我的应用程序，在不调用 getContentResolver 方法的情况下，我的 AsyncTask 方法工作正常。 我不知道我的 getContentResolver 方法有什么问题。
我的 AsyncTask 文件是，
public class clsAsyncTask extends AsyncTask<TextView, String, Boolean> {
TextView txtView;
Boolean finalStatus = false;
@Override
protected Boolean doInBackground(TextView... params) {
if(params.length > 0){
txtView = params[0];
saveContacts contacts = new saveContacts("");
contacts.onHandleIntent(new Intent());
publishProgress("Step 2 cleared");
finalStatus = true;
}
return finalStatus;
}
@Override
protected void onPreExecute() {
super.onPreExecute();
}
@Override
protected void onPostExecute(Boolean aBoolean) {
if(aBoolean){
publishProgress("All cleared");
}else{
publishProgress("Error accured");
}
}
@Override
protected void onProgressUpdate(String... values) {
txtView.setText(values[0]);
}
}
我的 getContentResolver 文件是，
public class saveContacts extends IntentService {
public saveContacts(String name) {
super(name);
}
@Override
protected void onHandleIntent(Intent intent) {
StringBuffer sb = new StringBuffer();
sb.append("......Contact Details.....");
String name = "";
String phoneNumber="";
String emailId = "";
Cursor phones = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,null,null, null);
sb.append("total = " + phones.getCount());
while (phones.moveToNext())
{
name=phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
phoneNumber = phones.getString(phones.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
sb.append("\nEmail: " + name + " phoneNumber: " + phoneNumber);
}
phones.close();
}
}
我的主要 activity 调用异步方法如下所示，
public class MainActivity extends ActionBarActivity {
TextView txtView;
clsAsyncTask _AsyncTaskWorker;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
txtView = (TextView) findViewById(R.id.txt_view);
txtView.setText("Execution start");
_AsyncTaskWorker = new clsAsyncTask();
_AsyncTaskWorker.execute(txtView);
}
}
Logcat在错误部分，它显示如下，
07-11 09:02:24.630 664-705/? E/ElectronBeam﹕ Can not update rotation!
07-11 09:02:24.946 664-705/? E/ElectronBeam﹕ Can not update rotation!
07-11 09:02:26.295 4384-4384/? E/InitDefaultSoftInfo﹕ i=1defaultresolveinfo.size():2
07-11 09:02:26.295 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.327 735-735/? E/KeyguardUpdateMonitor﹕ Object tried to add another callback
java.lang.Exception: Called by
at com.android.keyguard.KeyguardUpdateMonitor.registerCallback(KeyguardUpdateMonitor.java:1176)
at com.android.keyguard.KeyguardSelectorView.onResume(KeyguardSelectorView.java:397)
at com.android.keyguard.KeyguardHostView.onScreenTurnedOn(KeyguardHostView.java:1311)
at com.android.keyguard.KeyguardViewManager.onScreenTurnedOn(KeyguardViewManager.java:576)
at com.android.keyguard.KeyguardViewMediator.handleNotifyScreenOn(KeyguardViewMediator.java:1933)
at com.android.keyguard.KeyguardViewMediator.access00(KeyguardViewMediator.java:132)
at com.android.keyguard.KeyguardViewMediator.handleMessage(KeyguardViewMediator.java:1539)
at android.os.Handler.dispatchMessage(Handler.java:110)
at android.os.Looper.loop(Looper.java:193)
at android.app.ActivityThread.main(ActivityThread.java:5341)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:830)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:646)
at dalvik.system.NativeStart.main(Native Method)
07-11 09:02:26.343 4384-4384/? E/InitDefaultSoftInfo﹕ i=2defaultresolveinfo.size():3
07-11 09:02:26.343 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.351 4384-4384/? E/InitDefaultSoftInfo﹕ i=3defaultresolveinfo.size():4
07-11 09:02:26.351 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.356 664-664/? E/﹕ Could not open '/data/data/hotplug/cmd'
07-11 09:02:26.356 664-664/? E/﹕ error : 2, No such file or directory
07-11 09:02:26.440 4384-4384/? E/InitDefaultSoftInfo﹕ i=4defaultresolveinfo.size():5
07-11 09:02:26.440 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.700 4384-4384/? E/InitDefaultSoftInfo﹕ i=6defaultresolveinfo.size():7
07-11 09:02:26.700 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.814 4384-4384/? E/InitDefaultSoftInfo﹕ i=7defaultresolveinfo.size():8
07-11 09:02:26.814 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:26.944 143-30185/? E/AudioMTKHardware﹕ setCommonParameters() still have param.size() = 1, remain param = "screen_state=on"
07-11 09:02:28.333 664-664/? E/RemoteViews﹕ ANR Warning,RemoteViews can only be used once ,if not ,it may cause ANR in hosts such as Laucher,SystemUI. keys for search <ANR Exception MSG History>
07-11 09:02:28.802 858-1274/? E/CellLocation﹕ create GsmCellLocation
07-11 09:02:29.049 858-1274/? E/CellLocation﹕ create GsmCellLocation
07-11 09:02:29.514 973-1156/? E/ActivityThread﹕ Failed to find provider info for com.gionee.account
07-11 09:02:30.202 16221-16221/? E/PhotosPlugin﹕ Loading PhotosPlugin
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:31.962 143-516/? E/﹕ AudioCloseDumpPCMFile file== NULL
07-11 09:02:32.476 16165-16241/keval.asynctask E/AndroidRuntime﹕ FATAL EXCEPTION: AsyncTask #1
Process: keval.asynctask, PID: 16165
java.lang.RuntimeException: An error occured while executing doInBackground()
at android.os.AsyncTask.done(AsyncTask.java:300)
at java.util.concurrent.FutureTask.finishCompletion(FutureTask.java:355)
at java.util.concurrent.FutureTask.setException(FutureTask.java:222)
at java.util.concurrent.FutureTask.run(FutureTask.java:242)
at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
Caused by: java.lang.NullPointerException
at android.content.ContextWrapper.getContentResolver(ContextWrapper.java:99)
at keval.asynctask.saveContacts.onHandleIntent(saveContacts.java:26)
at keval.asynctask.clsAsyncTask.doInBackground(clsAsyncTask.java:24)
at keval.asynctask.clsAsyncTask.doInBackground(clsAsyncTask.java:14)
at android.os.AsyncTask.call(AsyncTask.java:288)
at java.util.concurrent.FutureTask.run(FutureTask.java:237)
at android.os.AsyncTask$SerialExecutor.run(AsyncTask.java:231)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
at java.lang.Thread.run(Thread.java:841)
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ appName=keval.asynctask, acAppName=/system/bin/surfaceflinger
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ 0
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ appName=keval.asynctask, acAppName=/system/bin/surfaceflinger
07-11 09:02:32.501 16165-16165/keval.asynctask E/﹕ 0
07-11 09:02:32.889 664-684/? E/﹕ Could not open '/data/data/hotplug/cmd'
07-11 09:02:32.889 664-684/? E/﹕ error : 2, No such file or directory
07-11 09:02:33.077 4384-4384/? E/InitDefaultSoftInfo﹕ i=1defaultresolveinfo.size():2
07-11 09:02:33.077 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.093 4384-4384/? E/InitDefaultSoftInfo﹕ i=2defaultresolveinfo.size():3
07-11 09:02:33.093 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.095 4384-4384/? E/InitDefaultSoftInfo﹕ i=3defaultresolveinfo.size():4
07-11 09:02:33.095 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.096 4384-4384/? E/InitDefaultSoftInfo﹕ i=4defaultresolveinfo.size():5
07-11 09:02:33.096 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.141 4384-4384/? E/InitDefaultSoftInfo﹕ i=6defaultresolveinfo.size():7
07-11 09:02:33.141 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.163 4384-4384/? E/InitDefaultSoftInfo﹕ i=7defaultresolveinfo.size():8
07-11 09:02:33.163 4384-4384/? E/InitDefaultSoftInfo﹕ best != null
07-11 09:02:33.496 664-944/? E/﹕ Could not open '/data/data/hotplug/cmd'
07-11 09:02:33.496 664-944/? E/﹕ error : 2, No such file or directory
07-11 09:02:35.064 16307-16323/? E/chromium_android_linker﹕ UseSharedRelro: Could not use shared RELRO for libchrome.so: No pages were swapped into RELRO ashmem
07-11 09:02:35.131 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.131 16307-16323/? E/﹕ 0
07-11 09:02:35.131 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.131 16307-16323/? E/﹕ 0
07-11 09:02:35.229 1003-1003/? E/NetworkScheduler.SchedulerReceiver﹕ Invalid parameter app
07-11 09:02:35.229 1003-1003/? E/NetworkScheduler.SchedulerReceiver﹕ Invalid package name : Perhaps you didn't include a PendingIntent in the extras?
07-11 09:02:35.300 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.301 16307-16323/? E/﹕ 0
07-11 09:02:35.301 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.301 16307-16323/? E/﹕ 0
07-11 09:02:35.325 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.325 16307-16323/? E/﹕ 0
07-11 09:02:35.325 16307-16323/? E/﹕ appName=com.android.chrome:privileged_process0, acAppName=/system/bin/surfaceflinger
07-11 09:02:35.325 16307-16323/? E/﹕ 0
07-11 09:02:36.016 16370-16370/? E/﹕ appName=com.google.android.apps.magazines, acAppName=/system/bin/surfaceflinger
07-11 09:02:36.016 16370-16370/? E/﹕ 0
07-11 09:02:36.016 16370-16370/? E/﹕ appName=com.google.android.apps.magazines, acAppName=/system/bin/surfaceflinger
07-11 09:02:36.016 16370-16370/? E/﹕ 0
07-11 09:02:36.791 16422-16440/? E/NativeCrypto﹕ ssl=0x607e57a8 cert_verify_callback x509_store_ctx=0x610ad8c0 arg=0x0
07-11 09:02:36.791 16422-16440/? E/NativeCrypto﹕ ssl=0x607e57a8 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_RSA
07-11 09:02:36.813 16470-16470/? E/dalvikvm﹕ Could not find class 'com.amazon.device.messaging.ADM', referenced from method com.appboy.Appboy.<init>
07-11 09:02:37.291 664-1595/? E/ActivityManager﹕ Service ServiceRecord{42d9f2b0 u0 com.google.android.youtube/com.google.android.apps.youtube.app.offline.transfer.OfflineTransferService} in process ProcessRecord{42c8a980 15786:com.google.android.youtube/u0a91} not same as in map: null
07-11 09:02:37.348 16470-16542/? E/NativeCrypto﹕ ssl=0x62875cc0 cert_verify_callback x509_store_ctx=0x6274a940 arg=0x0
07-11 09:02:37.348 16470-16542/? E/NativeCrypto﹕ ssl=0x62875cc0 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_RSA
07-11 09:02:37.453 1003-1003/? E/AuthorizationBluetoothService﹕ Proximity feature is not enabled.
07-11 09:02:37.456 16470-16532/? E/NativeCrypto﹕ ssl=0x629948f8 cert_verify_callback x509_store_ctx=0x623a1940 arg=0x0
07-11 09:02:37.456 16470-16532/? E/NativeCrypto﹕ ssl=0x629948f8 cert_verify_callback calling verifyCertificateChain authMethod=RSA
07-11 09:02:37.482 16470-16529/? E/NativeCrypto﹕ ssl=0x628abbb0 cert_verify_callback x509_store_ctx=0x6203e940 arg=0x0
07-11 09:02:37.483 16470-16529/? E/NativeCrypto﹕ ssl=0x628abbb0 cert_verify_callback calling verifyCertificateChain authMethod=RSA
07-11 09:02:37.526 16294-16294/? E/dalvikvm﹕ Could not find class 'android.telecom.TelecomManager', referenced from method com.google.android.gms.wearable.service.y.a
07-11 09:02:37.603 858-2870/? E/MDM﹕ [67] b.run: Couldn't connect to Google API client: ConnectionResult{statusCode=API_UNAVAILABLE, resolution=null}
07-11 09:02:38.568 16572-16572/? E/dalvikvm﹕ Could not find class 'android.app.Notification$Action$Builder', referenced from method b.a
07-11 09:02:38.584 16572-16572/? E/dalvikvm﹕ Could not find class 'al', referenced from method b.a
07-11 09:02:38.586 16572-16572/? E/dalvikvm﹕ Could not find class 'an', referenced from method b.a
07-11 09:02:38.592 16572-16572/? E/dalvikvm﹕ Could not find class 'android.app.RemoteInput[]', referenced from method b.a
07-11 09:02:38.871 16572-16572/? E/WifiManager﹕ mWifiServiceMessenger == null
07-11 09:02:39.316 16572-16572/? E/WifiManager﹕ mWifiServiceMessenger == null
07-11 09:02:42.352 16422-16422/? E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.AttributionIdProvider
07-11 09:02:42.366 16422-16663/? E/ActivityThread﹕ Failed to find provider info for com.facebook.katana.provider.AttributionIdProvider
07-11 09:02:42.546 16422-16439/? E/NativeCrypto﹕ ssl=0x607e3ed0 cert_verify_callback x509_store_ctx=0x60f6f940 arg=0x0
07-11 09:02:42.547 16422-16439/? E/NativeCrypto﹕ ssl=0x607e3ed0 cert_verify_callback calling verifyCertificateChain authMethod=ECDHE_ECDSA
07-11 09:02:58.108 143-17153/? E/AudioMTKHardware﹕ setCommonParameters() still have param.size() = 1, remain param = "screen_state=off"
07-11 09:02:59.036 973-1156/? E/ActivityThread﹕ Failed to find provider info for com.gionee.account
07-11 09:03:00.337 664-664/? E/RemoteViews﹕ ANR Warning,RemoteViews can only be used once ,if not ,it may cause ANR in hosts such as Laucher,SystemUI. keys for search <ANR Exception MSG History>
07-11 09:03:03.056 735-735/? E/KeyguardHostView﹕ KeyguardHostView()
我已经在清单文件中添加了所有互联网和联系人读取权限。
请告诉我需要进行哪些更改才能使其正常工作。
谢谢。
您遇到 NPE（又名 NullPointerException）是因为您手动创建了 IntentService，这是一件坏事：saveContacts contacts = new saveContacts("");
这里是关于使用 IntentServices 的tutorial。
或者在您的情况下，将代码移出 onHandleIntent 并将其直接放入 doInBackground.