如何在低内存Android设备上跳过启动画面活动？

时间：2015-08-18 10:30:51

标签： android out-of-memory android-manifest splash-screen splash

在 minSdkLevel = 9 的应用中，通过以下代码显示启动画面：

public class SplashActivity extends Activity {
    private static final int DELAY = 3000;

    @Override
    protected void onCreate(final Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        try {
            setContentView(R.layout.activity_splash);
        } catch (OutOfMemoryError e) {
            // ignore
        }

        new Handler().postDelayed(new Runnable() {
            @Override
            public void run() {
                final Intent intent = new Intent(
                    SplashActivity.this, MainActivity.class);
                intent.addFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                startActivity(intent);
                finish();
            }
        }, DELAY);

        Utils.init(this);
    }

    @Override
    public void onBackPressed() {
        // protect from exiting the application when splash screen is shown
    }
}

activity_splash.xml布局文件主要包含ImageView：

<FrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

    <ImageView
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_gravity="center"
        android:contentDescription="@string/app_name"
        android:scaleType="centerInside"
        android:src="@drawable/splash" />

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_gravity="bottom|center_horizontal"
        android:text="@string/copyright" />

</FrameLayout>

不幸的是，在 Nexus 1 上，应用程序因内存不足而崩溃错误：

Nexus 1

splash.png有两种变体 - 对于mdpi（280 KByte）和xxhdpi：

Android Studio

当然可以缩小启动图像，可以提供越来越多的变体（ldpi，xhdpi，...） - 但为什么上面的Java代码中的try/catch没有帮助呢？

是否有更好的方法可以解决这个问题 - 可能是AndroidManifest.xml某些指令要跳过SplashActivity并在低内存设备上加载MainActivity？

这里是完整的崩溃追踪：

java.lang.RuntimeException: Unable to start activity ComponentInfo{XXX/XXX.SplashActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class android.widget.ImageView
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647)
        at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
        at android.app.ActivityThread.access$1500(ActivityThread.java:117)
        at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
        at android.os.Handler.dispatchMessage(Handler.java:99)
        at android.os.Looper.loop(Looper.java:130)
        at android.app.ActivityThread.main(ActivityThread.java:3683)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:507)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
        at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class android.widget.ImageView
        at android.view.LayoutInflater.createView(LayoutInflater.java:518)
        at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
        at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
        at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
        at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
        at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
        at android.app.Activity.setContentView(Activity.java:1657)
        at XXX.SplashActivity.onCreate(SplashActivity.java:16)
        at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
        at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.reflect.InvocationTargetException
        at java.lang.reflect.Constructor.constructNative(Native Method)
        at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
        at android.view.LayoutInflater.createView(LayoutInflater.java:505)
            at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
            at android.app.Activity.setContentView(Activity.java:1657)
            at XXX.SplashActivity.onCreate(SplashActivity.java:16)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)
 Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget
        at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
        at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:460)
        at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:336)
        at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
        at android.content.res.Resources.loadDrawable(Resources.java:1709)
        at android.content.res.TypedArray.getDrawable(TypedArray.java:601)
        at android.widget.ImageView.<init>(ImageView.java:118)
        at android.widget.ImageView.<init>(ImageView.java:108)
            at java.lang.reflect.Constructor.constructNative(Native Method)
            at java.lang.reflect.Constructor.newInstance(Constructor.java:415)
            at android.view.LayoutInflater.createView(LayoutInflater.java:505)
            at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
            at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
            at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
            at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
            at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
            at android.app.Activity.setContentView(Activity.java:1657)
            at XXX.SplashActivity.onCreate(SplashActivity.java:16)
            at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
            at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611)
            at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663)
            at android.app.ActivityThread.access$1500(ActivityThread.java:117)
            at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
            at android.os.Handler.dispatchMessage(Handler.java:99)
            at android.os.Looper.loop(Looper.java:130)
            at android.app.ActivityThread.main(ActivityThread.java:3683)
            at java.lang.reflect.Method.invokeNative(Native Method)
            at java.lang.reflect.Method.invoke(Method.java:507)
            at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
            at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
            at dalvik.system.NativeStart.main(Native Method)

3 个答案:

答案 0 :(得分：1)

这是堆栈的相关位，它告诉我它是InflateException：

Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class android.widget.ImageView
    at android.view.LayoutInflater.createView(LayoutInflater.java:518)
    at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
    at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
    at android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:408)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
    at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
    at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:207)
    at android.app.Activity.setContentView(Activity.java:1657)
    at XXX.SplashActivity.onCreate(SplashActivity.java:16)

^你的方法在这里

下面的其他“Caused by: s”是内部异常。

java.lang.RuntimeException: Unable to start activity ComponentInfo{XXX/XXX.SplashActivity}: android.view.InflateException: Binary XML file line #9: Error inflating class android.widget.ImageView
Caused by: android.view.InflateException: Binary XML file line #9: Error inflating class android.widget.ImageView
Caused by: java.lang.reflect.InvocationTargetException
Caused by: java.lang.OutOfMemoryError: bitmap size exceeds VM budget

答案 1 :(得分：1)

首先，为什么你会展示这个Splash屏幕？这不是一个好习惯，它的代码除了等待3秒钟之外什么也做不了，它显然会导致问题，但你坚持修复它而不是摆脱它一共。 傻！

其次，许多年前出现的像N1这样的设备没有现代设备那样的RAM功能。只有一个位图，你就会耗尽它的资源。要么优化你的位图使用，要么完全摆脱它，如果你必须有一个Splash屏幕，可以找到替代方案。

答案 2 :(得分：0)

尝试将图片从.png重新调整为.jpg格式。这将使尺寸减小近一半。然后在“活动清单”文件中使用largeHeap标记

<application
....
   android:largeHeap="true">

还记得制作一个try catch块，以便绕过显示Splash屏幕并重定向到主要活动。

While( ! success ) {
   try {
       // load resources
  }  catch (OutOfMemoryError E) { 
       // do something to use less memory and try again
  }
 }
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