Logcat 错误运行时异常，无法启动活动

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【中文标题】Logcat 错误运行时异常，无法启动活动【英文标题】：Logcat Error Run time Exception, unable to start activity 【发布时间】：2016-04-14 03:12:34 【问题描述】：

当我尝试在模拟器中运行应用程序时，我想知道为什么会这样。该应用程序停止工作。我希望我的运行时异常的原因是什么。

这是我完整的 logcat 的副本：

04-14 02:40:39.904 6836-6836/com.example.jas.emojiexpress E/androidRuntime: FATAL EXCEPTION: main
Process: com.example.jas.emojiexpress, PID: 6836
java.lang.RuntimeException: Unable to start activity ComponentInfocom.example.jas.emojiexpress/com.example.jas.emojiexpress.HomePage: android.view.InflateException: Binary XML file line #17: 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 #17: 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:257)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.example.jas.emojiexpress.HomePage.onCreate(HomePage.java:18)
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.parseInclude(LayoutInflater.java:941)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:831)
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798)
at android.view.LayoutInflater.inflate(LayoutInflater.java:515)
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:257) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
at com.example.jas.emojiexpress.HomePage.onCreate(HomePage.java:18) 
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.parseInclude(LayoutInflater.java:941) 
at android.view.LayoutInflater.rInflate(LayoutInflater.java:831) 
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
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:257) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
at com.example.jas.emojiexpress.HomePage.onCreate(HomePage.java:18) 
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 74649612 byte allocation with 1048576 free bytes and 63MB 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.LinearLayout.<init>(LinearLayout.java:203)
at android.widget.LinearLayout.<init>(LinearLayout.java:199)
at android.widget.LinearLayout.<init>(LinearLayout.java:195)
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.parseInclude(LayoutInflater.java:941) 
at android.view.LayoutInflater.rInflate(LayoutInflater.java:831) 
at android.view.LayoutInflater.rInflateChildren(LayoutInflater.java:798) 
at android.view.LayoutInflater.inflate(LayoutInflater.java:515) 
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:257) 
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109) 
at com.example.jas.emojiexpress.HomePage.onCreate(HomePage.java:18) 
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) 

这是我的主页 java：

public class HomePage extends AppCompatActivity 

@Override
protected void onCreate(Bundle savedInstanceState) 
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_home_page);
    Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);

    Button Button = (Button) findViewById(R.id.button);
    Button.setOnClickListener(new View.OnClickListener() 
        public void onClick(View v) 
            startActivity(new Intent(HomePage.this, ChoicePage.class));
        
    );



@Override
public boolean onCreateOptionsMenu(Menu menu) 
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_home_page, menu);
    return true;


@Override
public boolean onOptionsItemSelected(MenuItem item) 
    // Handle action bar item clicks here. The action bar will
    // automatically handle clicks on the Home/Up button, so long
    // as you specify a parent activity in AndroidManifest.xml.
    int id = item.getItemId();

    //noinspection SimplifiableIfStatement
    if (id == R.id.action_settings) 
        return true;
    

    return super.onOptionsItemSelected(item);

这是我的 homepage.xml 的内容

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_
android:layout_
android:paddingLeft="16dp"
android:paddingRight="16dp"
android:paddingTop="16dp"
android:paddingBottom="16dp"
app:layout_behavior="@string/appbar_scrolling_view_behavior"
android:orientation="vertical"
android:weightSum="2"
tools:showIn="@layout/activity_home_page"
tools:context=".HomePage"
android:background="@drawable/backgroundnew">

    <LinearLayout
        android:layout_
        android:layout_
        android:orientation="vertical"
        android:weightSum="1">

        </LinearLayout>

        <LinearLayout
            android:layout_
            android:layout_
            android:orientation="vertical"
            android:weightSum="1">

        <Button
            android:background="#FFB6C1"
            android:layout_
            android:layout_
            android:text="   Click This   "
            android:id="@+id/button"
            android:layout_marginBottom="124dp"
            android:layout_alignParentBottom="true"
            android:layout_centerHorizontal="true"
            android:layout_gravity="center_horizontal" />

    </LinearLayout>

</LinearLayout>

【问题讨论】：

您的LinearLayouts 嵌套和缩进异常。嵌套在父级中的第一个LinearLayout 不包含任何内容，第二个包含一个按钮，但缩进使它看起来不同。尝试删除第一个嵌套的LinearLayout，尽管我怀疑这是你的问题。 你能发布ChoicePage.class的xml OutOfMemoryError - 看起来您在HomePage 的布局中用于根LinearLayout 的背景图像太大。 【参考方案1】：

原因：java.lang.OutOfMemoryError: Failed to allocate a 74649612 1048576 个空闲字节和 63MB 的字节分配，直到 OOM

如果您检查Caused by: 行，看起来根本原因是OutOfMemoryError 发生在BitmapFactory.nativeDecodeAsset() 中。 （另请注意对“74649612 字节分配内存不足”的引用）。

您是否尝试在布局中的某个位置包含一个非常大的图像文件？

【讨论】：

【参考方案2】：

看起来可能是因为您的@drawable/backgroundnew 的像素分辨率太高。有人举报了类似情况here。

【讨论】：

【参考方案3】：

在您的清单中，您使用 AppCompat 定义了它们，因为您在这里扩展了 AppCompatActivity，所以如果您没有定义，请定义并尝试他们解决您的崩溃问题，如下所示。

android:theme="@style/Theme.AppCompat.Light.NoActionBar"

【讨论】：

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