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动画导致内存溢出异常

javaandroidanimationout-of-memory
3

当动画开始播放时，我的应用程序会出现outofmemory异常。我该怎么办？

动画中的图像组合大小为512kb，共10张图片。

我的活动类是button_anime。

 public class Button_Anime extends Activity{

private static int SPLASH_TIME_OUT = 500;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_splash_about);
    ImageView loading =(ImageView) findViewById(R.id.iVArcRail_2);
    loading.setBackgroundResource(R.drawable.about_button_anime);
    AnimationDrawable load =(AnimationDrawable)loading.getBackground();
    load.start();
    new Handler().postDelayed(new Runnable() {
               
        @Override
        public void run() {
               Intent i = new Intent(Button_Anime.this, Home.class); 
            startActivity(i);
            finish();
        }
    }, SPLASH_TIME_OUT);
  }
 }

我的activity_splash_about.xml文件。
  <?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/withoutlogo" >

<ImageView
    android:id="@+id/imageView1"
    android:layout_width="wrap_content"
    android:layout_height="70dp"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:layout_marginBottom="10dp"
    android:layout_marginTop="10dp"
    android:background="@drawable/logoline" />

<ImageView
    android:id="@+id/iVArcRail_2"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/imageView1"/>
 </RelativeLayout>

这是动画文件。about_button_anime 
  <?xml version="1.0" encoding="utf-8"?>
  <animation-list xmlns:android="http://schemas.android.com/apk/res/android" 
  android:oneshot="false" >
  <item
      android:drawable="@drawable/ab1"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab2"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab3"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab4"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab5"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab6"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab7"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab8"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab9"
      android:duration="50"/>
  <item
      android:drawable="@drawable/ab10"
      android:duration="50"/>
  
  </animation-list>

这是我的日志记录。

 FATAL EXCEPTION: main
 Process: com.quinoid.thomasinternational, PID: 1514
 java.lang.OutOfMemoryError
 at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
 at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:587)
 at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:422)
 at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:840)
 at android.content.res.Resources.loadDrawable(Resources.java:2110)
 at android.content.res.Resources.getDrawable(Resources.java:700)
 at android.graphics.drawable.AnimationDrawable.inflate(AnimationDrawable.java:282)
 at android.graphics.drawable.Drawable.createFromXmlInner(Drawable.java:937)
 at android.graphics.drawable.Drawable.createFromXml(Drawable.java:877)
 at android.content.res.Resources.loadDrawable(Resources.java:2092)
 at android.content.res.Resources.getDrawable(Resources.java:700)
 at android.view.View.setBackgroundResource(View.java:15303)
 at com.quinoid.thomasinternational.Button_Anime.onCreate(Button_Anime.java:19)
 at android.app.Activity.performCreate(Activity.java:5231)
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
 at android.app.ActivityThread.access$800(ActivityThread.java:135)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:136)
 at android.app.ActivityThread.main(ActivityThread.java:5017)
 at java.lang.reflect.Method.invokeNative(Native Method)
 at java.lang.reflect.Method.invoke(Method.java:515)
 at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
 at dalvik.system.NativeStart.main(Native Method)

我该如何启动这个动画？

我已经提供了largeHeap="true"。

在AndroidManifest中添加android:largeHeap="true"可以帮助你。 - Ramki Anba
3个回答
4
这将起到很好的作用， 确保您将图像放在资产文件夹中。
public class AnimationActivily extends Activity {

private Bitmap log_imgs[];
private Bitmap tempBitmap;
private Handler uiHandler;
private ImageView logo_view;
int img_cnt = 1;
protected int _splashTime = 91;
Thread splashTread;

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

    this.getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
            WindowManager.LayoutParams.FLAG_FULLSCREEN);

    setContentView(R.layout.activity_animation_activily);
    logo_view = (ImageView) findViewById(R.id.logo_view);
    log_imgs = new Bitmap[91];
    for (int i = 1; i <= 90; i++) {
        get_Images_Assest(i, "logo_pngs");
    }
    logo_view.setImageBitmap(log_imgs[70]);
    uiHandler = new Handler();
    // thread for displaying the SplashScreen
    splashTread = new Thread() {
        @Override
        public void run() {
            try {
                while (img_cnt < _splashTime) {
                    sleep(30);
                    if (img_cnt <= 90)
                        update_view(img_cnt);
                    img_cnt++;

                }
            } catch (InterruptedException e) {
                // do nothing
            } finally {

                Intent i = new Intent(AnimationActivily.this,
                        MainActivity.class);
                i.setFlags(Intent.FLAG_ACTIVITY_NO_ANIMATION);
                startActivity(i);
                AnimationActivily.this.finish();
                // overridePendingTransition(R.anim.slide_in,
                // R.anim.slide_out);
                // *** Put this in another
                // Activity***//overridePendingTransition(R.anim.slide_in,
                // R.anim.slide_out);
            }
        }
    };
    splashTread.start();

}

public Bitmap tempImg;

private void get_Images_Assest(int cnt, String folder_name) {
    try {

        InputStream is = getAssets().open(
                folder_name + "/" + "logo" + cnt + ".png");
        if (tempImg != null) {
            tempImg = null;
        }
        tempImg = BitmapFactory.decodeStream(is);
        // tempBitmap = Bitmap.createScaledBitmap(tempImg,
        // tempImg.getWidth() * 2, tempImg.getHeight() * 2, true);
        log_imgs[cnt] = tempImg;
    } catch (IOException e) {
        e.printStackTrace();
    }
}

public void update_view(final int cnt) {
    uiHandler.post(new Runnable() {
        public void run() {
            try {
                logo_view.setImageBitmap(log_imgs[cnt]);
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    });

}

public void onBackPressed() {
}

public void onDestroy() {
    super.onDestroy();

    for (int i = 1; i <= 90; i++) {
        log_imgs[i].recycle();
    }
    log_imgs = null;
    splashTread = null;
}
}
在 get_Images_Assest(i, "logo_pngs") 中，"logo_pngs" 是什么？ - user3214173
还有，logo_view.setImageBitmap(log_imgs[70]); 中的log_imgs是什么？ - user3214173
抱歉回复晚了，logo_pngs是文件夹名称，log_imgs是从资产创建的位图数组。 - sidhanshu
您可以在资产文件夹中创建一个文件夹，给它任何名称。 将名称替换为新名称。 现在将图像放入具有相同名称的文件夹中，只需根据您的顺序添加 _0.._10.._14即可。 - sidhanshu
你可以给文件任何名称，例如你的文件名是img_0.png、img_1.png、img_3.png和img_4.png。然后更改：InputStream is = getAssets().open( folder_name + "/" + "img" + cnt + ".png");循环将会是：for (int i = 1; i <= 4; i++) { get_Images_Assest(i, "logo_pngs"); } - sidhanshu
1
我在内存较低的设备上遇到了背景动画类似的问题。 我通过编程实例化动画来解决这个问题，而不是使用XML animation-list。这个视图不再出现内存不足的问题。
    AnimationDrawable animationDrawable = new AnimationDrawable();
    animationDrawable.setOneShot(false); // True = only once, False = continuous

    int[] resources = {R.drawable.ticket_background_animation_1, R.drawable.ticket_background_animation_2, R.drawable.ticket_background_animation_3};

    int duration = 30;

    for (int resource : resources) {
        animationDrawable.addFrame(ContextCompat.getDrawable(context, resource), duration);
    }

    relativeLayout.setBackground(animationDrawable);
    animationDrawable.start();

当然，在 onDestroy() 中停止动画也非常重要！

    ((AnimationDrawable) relativeLayout.getBackground()).stop();
    // Sets background to null to make sure the animation is garbage collected
    relativeLayout.setBackground(null);
1

我曾经遇到同样的问题，因此我创建了一个类来避免OutOfMemoryError。Android会一次性加载所有可绘制对象，因此帧数很多的动画会导致这种错误。

FasterAnimationsContainer

FasterAnimationsContainer可以帮助您避免OutOfMemoryError。该类在后台线程上加载、设置和释放图像。

这里是链接。

易于实现

public class ExampleActivity extends Activity {

FasterAnimationsContainer mFasterAnimationsContainer;
private static final int[] IMAGE_RESOURCES = { R.drawable.anim_1,
        R.drawable.anim_2, R.drawable.anim_3, R.drawable.anim_4,
        R.drawable.anim_5, R.drawable.anim_6, R.drawable.anim_7,
        R.drawable.anim_8 };

private static final int ANIMATION_INTERVAL = 500;// 200ms

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_example);
    ImageView imageView = (ImageView) findViewById(R.id.imageview);
    mFasterAnimationsContainer = FasterAnimationsContainer
            .getInstance(imageView);
    mFasterAnimationsContainer.addAllFrames(IMAGE_RESOURCES,
            ANIMATION_INTERVAL);
    mFasterAnimationsContainer.start();
}

@Override
protected void onDestroy() {
    super.onDestroy();
    mFasterAnimationsContainer.stop();
}
}
我已经尝试过你的类，但当我返回到实现帧动画的屏幕时，它什么都没有显示。它只显示空的ImageView。 - Ashish Kumar Gupta
它正在重复运行，如何使其仅运行一次？ - Coas Mckey
这个库不起作用！除了从工作线程访问 UI 线程！ - Rez
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