當我開始另一個活動時，我的Android應用程序崩潰

這是我的問題，我的應用程序啓動完美，並且在調用它們時活動正常工作，但是當我回到主要活動並開始另一個活動時，我的應用程序崩潰。當我開始另一個活動時，我的Android應用程序崩潰

這是在logcat的錯誤：

06-29 23:48:46.885: E/AndroidRuntime(860): FATAL EXCEPTION: main 
06-29 23:48:46.885: E/AndroidRuntime(860): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.whaoapps.maths/com.whaoapps.maths.Integrales}: android.view.InflateException: Binary XML file line #16: Error inflating class <unknown> 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.ActivityThread.access$600(ActivityThread.java:141) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.os.Handler.dispatchMessage(Handler.java:99) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.os.Looper.loop(Looper.java:137) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.ActivityThread.main(ActivityThread.java:5041) 
06-29 23:48:46.885: E/AndroidRuntime(860): at java.lang.reflect.Method.invokeNative(Native Method) 
06-29 23:48:46.885: E/AndroidRuntime(860): at java.lang.reflect.Method.invoke(Method.java:511) 
06-29 23:48:46.885: E/AndroidRuntime(860): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
06-29 23:48:46.885: E/AndroidRuntime(860): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
06-29 23:48:46.885: E/AndroidRuntime(860): at dalvik.system.NativeStart.main(Native Method) 
06-29 23:48:46.885: E/AndroidRuntime(860): Caused by: android.view.InflateException: Binary XML file line #16: Error inflating class <unknown> 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.createView(LayoutInflater.java:613) 
06-29 23:48:46.885: E/AndroidRuntime(860): at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.onCreateView(LayoutInflater.java:660) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:685) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.rInflate(LayoutInflater.java:749) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.inflate(LayoutInflater.java:489) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.inflate(LayoutInflater.java:396) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.inflate(LayoutInflater.java:352) 
06-29 23:48:46.885: E/AndroidRuntime(860): at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.Activity.setContentView(Activity.java:1881) 
06-29 23:48:46.885: E/AndroidRuntime(860): at com.whaoapps.maths.Integrales.onCreate(Integrales.java:14) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.Activity.performCreate(Activity.java:5104) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
06-29 23:48:46.885: E/AndroidRuntime(860): ... 11 more 
06-29 23:48:46.885: E/AndroidRuntime(860): Caused by: java.lang.reflect.InvocationTargetException 
06-29 23:48:46.885: E/AndroidRuntime(860): at java.lang.reflect.Constructor.constructNative(Native Method) 
06-29 23:48:46.885: E/AndroidRuntime(860): at java.lang.reflect.Constructor.newInstance(Constructor.java:417) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.LayoutInflater.createView(LayoutInflater.java:587) 
06-29 23:48:46.885: E/AndroidRuntime(860): ... 25 more 
06-29 23:48:46.885: E/AndroidRuntime(860): Caused by: java.lang.OutOfMemoryError 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:502) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:355) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:785) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.content.res.Resources.loadDrawable(Resources.java:1965) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.content.res.TypedArray.getDrawable(TypedArray.java:601) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.View.<init>(View.java:3330) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.View.<init>(View.java:3259) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.view.ViewGroup.<init>(ViewGroup.java:425) 
06-29 23:48:46.885: E/AndroidRuntime(860): at android.widget.RelativeLayout.<init>(RelativeLayout.java:210) 
06-29 23:48:46.885: E/AndroidRuntime(860): ... 28 more

這是XML文件：

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads" 
xmlns:tools="http://schemas.android.com/tools" 
android:layout_width="match_parent" 
android:layout_height="match_parent" 
tools:context=".MainActivity" > 

<ImageView 
android:id="@+id/imageView1" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
android:layout_alignParentLeft="true" 
android:layout_alignParentTop="true" 
android:src="@drawable/maths" 
android:background="@android:color/white" /> 

<Button 
android:id="@+id/button2" 
android:layout_width="205dp" 
android:layout_height="50dp" 
android:layout_alignLeft="@+id/button1" 
android:layout_centerVertical="true" 
android:background="@android:color/transparent" 
android:onClick="derivadas" /> 

<Button 
android:id="@+id/button1" 
android:layout_width="205dp" 
android:layout_height="50dp" 
android:layout_above="@+id/button2" 
android:layout_centerHorizontal="true" 
android:layout_marginBottom="58dp" 
android:background="@android:color/transparent" 
android:onClick="integrales" /> 

<com.google.ads.AdView android:id="@+id/ad" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content" 
ads:adUnitId="my_unit_id" 
ads:adSize="BANNER" 
ads:testDevices="TEST_EMULATOR, TEST_DEVICE_ID" 
ads:loadAdOnCreate="true"/> 

</RelativeLayout>

Android清單：

<?xml version="1.0" encoding="utf-8"?> 
<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
package="com.whaoapps.maths" 
android:versionCode="1" 
android:versionName="1.0" > 



<uses-sdk 
    android:minSdkVersion="8" 
    android:targetSdkVersion="17" /> 
<uses-permission android:name="android.permission.SET_WALLPAPER"/> 
<uses-permission android:name="android.permission.WAKE_LOCK"/> 
<uses-permission android:name="android.permission.INTERNET"/> 
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/> 
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/> 

<application 
    android:allowBackup="true" 
    android:icon="@drawable/maths_icono" 
    android:label="@string/app_name" 
    android:theme="@style/AppTheme" > 

    <activity 
     android:name="com.google.ads.AdActivity" 
      android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|s mallestScreenSize" /> 
    <activity 
     android:name="com.whaoapps.maths.MainActivity" 
     android:screenOrientation="portrait" 
     android:label="@string/app_name" 
     android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > 
     <intent-filter> 
      <action android:name="android.intent.action.MAIN" /> 

      <category android:name="android.intent.category.LAUNCHER" /> 
     </intent-filter> 
    </activity> 
    <activity 
     android:name="com.whaoapps.maths.Derivadas" 
     android:screenOrientation="portrait" 
     android:theme="@android:style/Theme.Light.NoTitleBar"></activity> 
    <activity 
     android:name="com.whaoapps.maths.Integrales" 
     android:screenOrientation="portrait" 
     android:theme="@android:style/Theme.Light.NoTitleBar"></activity> 
</application> 

</manifest>

來源

2013-06-30 Whady

您的應用程序超出了其內存容量，而如堆棧軌跡中所示，使佈局膨脹：

06-29 23:48:46.885: E/AndroidRuntime(860): Caused by: java.lang.OutOfMemoryError

特別是，它在將位圖加載到內存時發生。以下行建議內存限制在佈局的第＃16行中。

06-29 23:48:46.885: E/AndroidRuntime(860): Caused by: android.view.InflateException: Binary XML file line #16: Error inflating class <unknown>

最有可能的（我沒算），這將指向被設置爲ImageView圖像：

android:src="@drawable/maths"

任何機會，maths繪製的是一個相當大的（如在像素尺寸）圖片？您可能需要將其縮小併爲各種密度桶提供不同的版本。另外，請注意，如果您正在模擬器上進行測試，您可能需要稍微調整堆大小設置。這可能會阻止應用程序崩潰，但顯然它並沒有解決您的應用程序使用（太多）內存的基本問題。最後，看看Android開發者網站上的Loading Large Bitmaps Efficiently guide

來源

2013-06-30 02:30:50

男人我不明白你想告訴我什麼，我是這個初學者:(@MH。 – Whady

@Whady：好吧，那麼簡短的版本就是你的應用程序使用了太多的內存，這可能是由於加載了一個非常大的圖像造成的;一個不適合你正在測試你的應用程序的設備，或者是一個比它需要的大的圖像高分辨率圖像在縮小時不會提供任何明顯的好處，因此請確保圖像符合其特定目的。無論如何，無論初學者還是非初學者，都必須閱讀鏈接指南。事情比我在這樣的評論中要好很多。 –

好的謝謝！@MH。 – Whady

當我開始另一個活動時，我的Android應用程序崩潰

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