启动新活动时出错（android）
昨天我做了简单的应用程序;因此，当我按下按钮时，新活动（Activity2Main）应该开始。 昨天它工作，我很高兴。一切都很棒。 今天，我试图运行应用程序，我看到了什么？当我按下按钮时，我看到崩溃和关闭应用程序消息。 它能是什么？ 这是控制台的日志：
E / AndroidRuntime: FATAL EXCEPTION: main
Process: com.example.dns.politicalscience, PID: 2076
java.lang.RuntimeException: Unable to start activity ComponentInfo {
com.example.dns.politicalscience / com.example.dns.politicalscience.Main2Activity
}: android.view.InflateException: Binary XML file line #2: Binary XML file line # 2: Error inflating class < unknown >
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2416)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 2476)
at android.app.ActivityThread. - wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1344)
at android.os.Handler.dispatchMessage(Handler.java: 102)
at android.os.Looper.loop(Looper.java: 148)
at android.app.ActivityThread.main(ActivityThread.java: 5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 616)
Caused by: android.view.InflateException: Binary XML file line #2: Binary XML file line # 2: Error inflating class < unknown >
at android.view.LayoutInflater.inflate(LayoutInflater.java: 539)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 423)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java: 267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java: 129)
at com.example.dns.politicalscience.Main2Activity.onCreate(Main2Activity.java: 11)
at android.app.Activity.performCreate(Activity.java: 6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 2476)
at android.app.ActivityThread. - wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1344)
at android.os.Handler.dispatchMessage(Handler.java: 102)
at android.os.Looper.loop(Looper.java: 148)
at android.app.ActivityThread.main(ActivityThread.java: 5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 616)
Caused by: android.view.InflateException: Binary XML file line #2: Error inflating class <unknown>
at android.view.LayoutInflater.createView(LayoutInflater.java: 645)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java: 58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java: 694)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java: 762)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java: 704)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 492)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 423)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java: 267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java: 129)
at com.example.dns.politicalscience.Main2Activity.onCreate(Main2Activity.java: 11)
at android.app.Activity.performCreate(Activity.java: 6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 2476)
at android.app.ActivityThread. - wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1344)
at android.os.Handler.dispatchMessage(Handler.java: 102)
at android.os.Looper.loop(Looper.java: 148)
at android.app.ActivityThread.main(ActivityThread.java: 5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 616)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at android.view.LayoutInflater.createView(LayoutInflater.java: 619)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java: 58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java: 694)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java: 762)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java: 704)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 492)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 423)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java: 267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java: 129)
at com.example.dns.politicalscience.Main2Activity.onCreate(Main2Activity.java: 11)
at android.app.Activity.performCreate(Activity.java: 6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 2476)
at android.app.ActivityThread. - wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1344)
at android.os.Handler.dispatchMessage(Handler.java: 102)
at android.os.Looper.loop(Looper.java: 148)
at android.app.ActivityThread.main(ActivityThread.java: 5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 616)
Caused by: java.lang.OutOfMemoryError: Failed to allocate a 44728332 byte allocation with 4194304 free bytes and 9 MB until OOM
at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java: 609)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java: 444)
at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java: 1080)
at android.content.res.Resources.loadDrawableForCookie(Resources.java: 2635)
at android.content.res.Resources.loadDrawable(Resources.java: 2540)
at android.content.res.TypedArray.getDrawable(TypedArray.java: 870)
at android.view.View. < init > (View.java: 3948)
at android.view.ViewGroup. < init > (ViewGroup.java: 573)
at android.widget.RelativeLayout. < init > (RelativeLayout.java: 248)
at android.widget.RelativeLayout. < init > (RelativeLayout.java: 244)
at android.widget.RelativeLayout. < init > (RelativeLayout.java: 240)
at java.lang.reflect.Constructor.newInstance(Native Method)
at android.view.LayoutInflater.createView(LayoutInflater.java: 619)
at com.android.internal.policy.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java: 58)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java: 694)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java: 762)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java: 704)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 492)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 423)
at android.view.LayoutInflater.inflate(LayoutInflater.java: 374)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java: 267)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java: 129)
at com.example.dns.politicalscience.Main2Activity.onCreate(Main2Activity.java: 11)
at android.app.Activity.performCreate(Activity.java: 6237)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: 1107)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java: 2369)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: 2476)
at android.app.ActivityThread. - wrap11(ActivityThread.java)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java: 1344)
at android.os.Handler.dispatchMessage(Handler.java: 102)
at android.os.Looper.loop(Looper.java: 148)
at android.app.ActivityThread.main(ActivityThread.java: 5417)
at java.lang.reflect.Method.invoke(Native Method)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java: 726)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java: 616)
我的Manifest.xml文件如下所示：
<?xml version="1.0" encoding="utf-8"?>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".Main2Activity"></activity>
</application>
这是我的activity1.xml：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@drawable/canbe_backgroud"
tools:context="com.example.dns.politicalscience.MainActivity"
android:onClick="onClickBackground">
<ImageButton
android:layout_width="55mm"
android:layout_height="20mm"
android:id="@+id/imageButton"
android:background="@drawable/start_button"
android:cropToPadding="false"
android:clickable="true"
android:onClick="onClickObama"
android:nestedScrollingEnabled="false" />
<ImageButton
android:layout_width="55mm"
android:layout_height="20mm"
android:id="@+id/imageButton2"
android:layout_below="@+id/imageButton"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:background="@drawable/idea_button"
android:clickable="true" />
<ImageButton
android:layout_width="55mm"
android:layout_height="20mm"
android:id="@+id/imageButton3"
android:layout_below="@+id/imageButton2"
android:background="@drawable/about_botton"
android:layout_centerHorizontal="true"
android:layout_marginTop="20dp"
android:clickable="true"
android:onClick="onClickAbout" />
</RelativeLayout>
Here's second activityxml:
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:background="@drawable/canbe_backgroud"
tools:context="com.example.dns.politicalscience.Main2Activity">
</RelativeLayout>
我发现代码中没有错误，即使在java中也是如此 这是第一个活动中的java-code onClick：
public void onClickAbout(View view) {
Intent intent = new Intent(this, Main2Activity.class);
startActivity(intent);
}
这是第二个：
public class Main2Activity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main2);
}
}
发生什么事，伙计们？昨天它在模拟器上工作得很好，但今天它显示了崩溃信息。
3 个答案:
答案 0 :(得分：0)
正如评论所指出的，它是一个OutOfMemoryError。
尝试在yout manifest文件中使用largeHeap。
<Application
..............
android:largeHeap="true"
............../>
无论如何，它是由你试图加载的一些大位图引起的，检查你的资源。
答案 1 :(得分：0)
增加分配给模拟器的内存大小......
这是一种从Andriod studio 1.2.0中找到操作模拟器堆的选项的方法
-
菜单工具 - ＆gt; Android-＆gt; AVD Manager
-
编辑选择的虚拟设备
-
点击高级设置并向下滚动
答案 2 :(得分：0)
正如其他人提到的那样，并且正如您的logcat所示，您的内存不足。您在图像按钮中使用的绘图太大（或者一起分配大量内存）。
首先，尝试使用PC上的图像编辑器压缩图像。然后用新的压缩图像覆盖旧图像。
然后，确保如果您在虚拟机上运行它，请按照@Randhawa所说的步骤进行操作。
完成这些操作后，请执行以下操作：
按照此处的说明高效加载位图（在＃34;将缩小后的版本加载到内存和＃34中）：http://developer.android.com/training/displaying-bitmaps/load-bitmap.html#load-bitmap
然后将位图转换为drawable，如下所示：
Drawable d = new BitmapDrawable(getResources(), bitmap);
在setContent（活动的xml）之后，在onCreate中以编程方式设置图像按钮背景：
ImageButton imgButton = (ImageButton) findViewById(R.id.imageButton);
int sdk = android.os.Build.VERSION.SDK_INT;
if(sdk < android.os.Build.VERSION_CODES.JELLY_BEAN){
imgButton.setBackgroundDrawable(d);
// where d is your Drawable
}
else{
imgButton.setBackground(d);
}
对图像按钮2和3执行相同的操作。
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