应用程序在 android 5.1 和 6.1 中运行良好，但在 4.10(API 16) 中崩溃
App works well in android 5.1 and 6.1 but crashes in 4.10(API 16)
我是 Android 开发的新手。我能够使此应用程序在 Android 5.1 中运行，但是当我尝试在 Android 4.1 中部署此应用程序时，它曾经在主 activity 本身中崩溃。我理解它是因为我使用了矢量图像并且 android 4.1 与它不兼容。为了克服这个问题，我设置了如下代码：
// Gradle Plugin 2.0+
android {
defaultConfig {
vectorDrawables.useSupportLibrary = true
}
}
You’ll note this new attribute only exists in the version 2.0 of the Gradle Plugin. If you are using Gradle 1.5 you’ll instead use
// Gradle Plugin 1.5
android {
defaultConfig {
generatedDensities = []
}
// This is handled for you by the 2.0+ Gradle Plugin
aaptOptions {
additionalParameters "--no-version-vectors"
}
}
我现在收到这个错误
AndroidRuntime: FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activityComponentInfo{com.abc.efg.plcapp/com.abc.efg.ghi.MainActivity}:
android.view.InflateException: Binary XML file line #37: Error
inflating class ImageView
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access0(ActivityThread.java:130)
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.view.InflateException: Binary XML file line #37:
Error inflating class ImageView
at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at
android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267)
at
android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129)
at
MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:5008)
at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access0(ActivityThread.java:130)
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: android.content.res.Resources$NotFoundException: File
res/drawable/ic_mood_24dp.xml from drawable resource ID #0x7f020057
at android.content.res.Resources.loadDrawable(Resources.java:1918)
at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
at android.widget.ImageView.(ImageView.java:120)
at
android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:57)
at
android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:53)
at
android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:106)
at
android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:963)
at
android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1022)
at
android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at
android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267)
at
android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129)
at
MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:5008)
at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access0(ActivityThread.java:130)
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line
1: invalid drawable tag vector
at
android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:877)
at android.graphics.drawable.Drawable.createFromXml(Drawable.java:818)
at android.content.res.Resources.loadDrawable(Resources.java:1915)
at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
at android.widget.ImageView.(ImageView.java:120)
at
android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:57)
at
android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:53)
at
android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:106)
at
android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:963)
at
android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1022)
at
android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44)
at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:736)
at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
at
android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267)
at
android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129)
at
com.abc.efg.ghi.MainActivity.onCreate(MainActivity.java:40)
at android.app.Activity.performCreate(Activity.java:5008)
at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079)
at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023)
at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084)
at android.app.ActivityThread.access0(ActivityThread.java:130)
at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4745)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at
com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
at dalvik.system.NativeStart.main(Native Method)
06-28 20:06:42.790 1648-1648/? I/Process: Sending signal. PID: 1648 SIG: 9
代码文件
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;
import android.util.Log;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
Button btnRegister;
Button btnRequestLog;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
private String android_id;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
if ( findViewById(R.id.fab) == null)
{}
else {
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
// Buttons
btnRegister = (Button) findViewById(R.id.btnRegister);
btnRequestLog = (Button) findViewById(R.id.btnRequestLog);
XML 文件
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
请帮我调试一下。我有点卡住了，需要你的帮助。
您正在使用矢量绘图。在 Android 4.x 及更早版本中，仅当您满足以下条件时才支持此功能：
- 使用 Android 支持库 23.x 或更高版本 ✓
- 在 gradle 构建文件中启用它（vectorDrawables.useSupportLibrary = true）✓
- 每当您使用
ImageView 时，请使用 srcCompat 而不是 src
最后一项可能是需要修复的问题。
我是 Android 开发的新手。我能够使此应用程序在 Android 5.1 中运行，但是当我尝试在 Android 4.1 中部署此应用程序时，它曾经在主 activity 本身中崩溃。我理解它是因为我使用了矢量图像并且 android 4.1 与它不兼容。为了克服这个问题，我设置了如下代码：
// Gradle Plugin 2.0+
android {
defaultConfig {
vectorDrawables.useSupportLibrary = true
}
}
You’ll note this new attribute only exists in the version 2.0 of the Gradle Plugin. If you are using Gradle 1.5 you’ll instead use
// Gradle Plugin 1.5
android {
defaultConfig {
generatedDensities = []
}
// This is handled for you by the 2.0+ Gradle Plugin
aaptOptions {
additionalParameters "--no-version-vectors"
}
}
我现在收到这个错误
AndroidRuntime: FATAL EXCEPTION: main java.lang.RuntimeException: Unable to start activityComponentInfo{com.abc.efg.plcapp/com.abc.efg.ghi.MainActivity}: android.view.InflateException: Binary XML file line #37: Error inflating class ImageView at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2059) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) at android.app.ActivityThread.access0(ActivityThread.java:130) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4745) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method) Caused by: android.view.InflateException: Binary XML file line #37: Error inflating class ImageView at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704) at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830) at android.view.LayoutInflater.rInflate(LayoutInflater.java:736) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830) at android.view.LayoutInflater.rInflate(LayoutInflater.java:736) at android.view.LayoutInflater.inflate(LayoutInflater.java:489) at android.view.LayoutInflater.inflate(LayoutInflater.java:396) at android.view.LayoutInflater.inflate(LayoutInflater.java:352) at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129) at MainActivity.onCreate(MainActivity.java:40) at android.app.Activity.performCreate(Activity.java:5008) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) at android.app.ActivityThread.access0(ActivityThread.java:130) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4745) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method) Caused by: android.content.res.Resources$NotFoundException: File res/drawable/ic_mood_24dp.xml from drawable resource ID #0x7f020057 at android.content.res.Resources.loadDrawable(Resources.java:1918) at android.content.res.TypedArray.getDrawable(TypedArray.java:601) at android.widget.ImageView.(ImageView.java:120) at android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:57) at android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:53) at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:106) at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:963) at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1022) at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675) at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830) at android.view.LayoutInflater.rInflate(LayoutInflater.java:736) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830) at android.view.LayoutInflater.rInflate(LayoutInflater.java:736) at android.view.LayoutInflater.inflate(LayoutInflater.java:489) at android.view.LayoutInflater.inflate(LayoutInflater.java:396) at android.view.LayoutInflater.inflate(LayoutInflater.java:352) at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129) at MainActivity.onCreate(MainActivity.java:40) at android.app.Activity.performCreate(Activity.java:5008) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) at android.app.ActivityThread.access0(ActivityThread.java:130) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4745) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method) Caused by: org.xmlpull.v1.XmlPullParserException: Binary XML file line 1: invalid drawable tag vector at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:877) at android.graphics.drawable.Drawable.createFromXml(Drawable.java:818) at android.content.res.Resources.loadDrawable(Resources.java:1915) at android.content.res.TypedArray.getDrawable(TypedArray.java:601) at android.widget.ImageView.(ImageView.java:120) at android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:57) at android.support.v7.widget.AppCompatImageView.(AppCompatImageView.java:53) at android.support.v7.app.AppCompatViewInflater.createView(AppCompatViewInflater.java:106) at android.support.v7.app.AppCompatDelegateImplV7.createView(AppCompatDelegateImplV7.java:963) at android.support.v7.app.AppCompatDelegateImplV7.onCreateView(AppCompatDelegateImplV7.java:1022) at android.support.v4.view.LayoutInflaterCompatHC$FactoryWrapperHC.onCreateView(LayoutInflaterCompatHC.java:44) at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:675) at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830) at android.view.LayoutInflater.rInflate(LayoutInflater.java:736) at android.view.LayoutInflater.parseInclude(LayoutInflater.java:830) at android.view.LayoutInflater.rInflate(LayoutInflater.java:736) at android.view.LayoutInflater.inflate(LayoutInflater.java:489) at android.view.LayoutInflater.inflate(LayoutInflater.java:396) at android.view.LayoutInflater.inflate(LayoutInflater.java:352) at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:267) at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:129) at com.abc.efg.ghi.MainActivity.onCreate(MainActivity.java:40) at android.app.Activity.performCreate(Activity.java:5008) at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1079) at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2023) at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2084) at android.app.ActivityThread.access0(ActivityThread.java:130) at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1195) at android.os.Handler.dispatchMessage(Handler.java:99) at android.os.Looper.loop(Looper.java:137) at android.app.ActivityThread.main(ActivityThread.java:4745) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786) at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553) at dalvik.system.NativeStart.main(Native Method) 06-28 20:06:42.790 1648-1648/? I/Process: Sending signal. PID: 1648 SIG: 9
代码文件
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.provider.Settings;
import android.support.design.widget.FloatingActionButton;
import android.support.design.widget.Snackbar;
import android.view.View;
import android.support.design.widget.NavigationView;
import android.support.v4.view.GravityCompat;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import com.google.android.gms.appindexing.Action;
import com.google.android.gms.appindexing.AppIndex;
import com.google.android.gms.common.api.GoogleApiClient;
import android.util.Log;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity
implements NavigationView.OnNavigationItemSelectedListener {
Button btnRegister;
Button btnRequestLog;
/**
* ATTENTION: This was auto-generated to implement the App Indexing API.
* See https://g.co/AppIndexing/AndroidStudio for more information.
*/
private GoogleApiClient client;
private String android_id;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
if ( findViewById(R.id.fab) == null)
{}
else {
}
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout);
ActionBarDrawerToggle toggle = new ActionBarDrawerToggle(
this, drawer, toolbar, R.string.navigation_drawer_open, R.string.navigation_drawer_close);
drawer.setDrawerListener(toggle);
toggle.syncState();
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
navigationView.setNavigationItemSelectedListener(this);
// ATTENTION: This was auto-generated to implement the App Indexing API.
// See https://g.co/AppIndexing/AndroidStudio for more information.
client = new GoogleApiClient.Builder(this).addApi(AppIndex.API).build();
// Buttons
btnRegister = (Button) findViewById(R.id.btnRegister);
btnRequestLog = (Button) findViewById(R.id.btnRequestLog);
XML 文件
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:openDrawer="start">
<include
layout="@layout/app_bar_main"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<android.support.design.widget.NavigationView
android:id="@+id/nav_view"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
android:fitsSystemWindows="true"
app:headerLayout="@layout/nav_header_main"
app:menu="@menu/activity_main_drawer" />
</android.support.v4.widget.DrawerLayout>
请帮我调试一下。我有点卡住了，需要你的帮助。
您正在使用矢量绘图。在 Android 4.x 及更早版本中，仅当您满足以下条件时才支持此功能：
- 使用 Android 支持库 23.x 或更高版本 ✓
- 在 gradle 构建文件中启用它（vectorDrawables.useSupportLibrary = true）✓
- 每当您使用
ImageView 时，请使用
srcCompat 而不是 src
最后一项可能是需要修复的问题。