使用线程或异步任务的位图工厂动画

这个问题是我在这个论坛上提出的多个问题的后续问题，这些问题涉及为什么我一直在尝试的动画不起作用。

简单回答一下之前的问题：

1. 我的动画作为 2 个班级的单独项目工作，但无法工作 当包含在我的包含多个类的项目中时。
2. 使用“finish()”类关闭了导致我的动画活动的所有活动
3. 应用程序永远不会关闭或冻结，动画只是不播放，但意图发生 并且下一个活动将成功打开/显示
4. 首先使用 10 张图像，每张图像大小为 70-80 kb 来制作动画，然后再使用， 10 张大小为 30 - 34 kb 的图像，仍然得到相同的效果。

从那以后我得出的结论是我的主线程可能做了过多的工作，这可能是动画无法正常发生的原因。

因此，我使用 2 个线程编写了以下序列，但仍然得到相同的结果。 有人可以解释一下发生了什么以及为什么我不能让一个简单的动画工作吗？？？

我的 ButtonAnime 类

public class ButtonAnime extends Activity{

private static int SPLASH_TIME_OUT = 500;



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

        setContentView(R.layout.activity_main);         
        final AnimationDrawable animate= new AnimationDrawable();           
        final ImageView imageView = (ImageView) findViewById(R.id.iVArcRail_2);

        new Thread(new Runnable() {   <---- thread 1

            @Override
            public void run() {
                // TODO Auto-generated method stub
                final BitmapFactory.Options options = new BitmapFactory.Options();
                 options.inSampleSize = 24;
                 options.inPurgeable = true;
                 options.inScaled = true;

                  Bitmap b;
                     Drawable d;

                    int i =5;
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab1, options);
                    d = new BitmapDrawable(getResources(),b);   
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab2, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab3, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab4, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab5, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab6, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab7, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab8, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab9, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    b = BitmapFactory.decodeResource(getResources(),R.drawable.ab10, options);
                    d = new BitmapDrawable(getResources(),b); 
                    animate.addFrame(d, i);
                    imageView.setBackground(animate);
                    imageView.post(new Runnable() {

                                @Override
                                public void run() {
                                    // TODO Auto-generated method stub
                                    animate.start();   
                                }

                            }); 
        }

        });

        new Handler().postDelayed(new Runnable() {  <-- thread 2

            @Override
            public void run() {
                // TODO Auto-generated method stub
                Intent i = new Intent(MainActivity.this , Home.class);
                startActivity(i);
                finish();
                System.gc();
            }
        }, 50);
    }

}

在使用anime_loading..按钮单击加载动画期间记录cat

 GC_EXPLICIT freed 10K, 1% free 27351K/27444K, paused 6ms+7ms, total 71ms
 GC_FOR_ALLOC freed 6098K, 22% free 23220K/29404K, paused 125ms, total 126ms
 GC_FOR_ALLOC freed <1K, 15% free 25169K/29404K, paused 185ms, total 189ms
 GC_FOR_ALLOC freed <1K, 8% free 27118K/29404K, paused 215ms, total 218ms
 GC_FOR_ALLOC freed <1K, 2% free 29068K/29404K, paused 139ms, total 140ms
 Grow heap (frag case) to 30.367MB for 1995856-byte allocation
 Clamp target GC heap from 32.367MB to 32.000MB
 GC_FOR_ALLOC freed <1K, 2% free 31017K/31356K, paused 235ms, total 235ms
 Clamp target GC heap from 32.368MB to 32.000MB
 GC_FOR_ALLOC freed <1K, 2% free 31018K/31356K, paused 232ms, total 233ms
 Forcing collection of SoftReferences for 1995856-byte allocation
 Clamp target GC heap from 32.368MB to 32.000MB
 GC_BEFORE_OOM freed <1K, 2% free 31018K/31356K, paused 290ms, total 290ms
 Out of memory on a 1995856-byte allocation.
 "main" prio=5 tid=1 RUNNABLE
    | group="main" sCount=0 dsCount=0 obj=0xb3a90c90 self=0xb8f64380
    | sysTid=1723 nice=0 sched=0/0 cgrp=apps handle=-1225301676
    | state=R schedstat=( 5530000000 8170000000 2275 ) utm=486 stm=67 core=0
 at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
 at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:575)
 at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:410)
 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.TypedArray.getDrawable(TypedArray.java:602)
 at android.widget.ImageView.<init>(ImageView.java:129)
 at android.widget.ImageView.<init>(ImageView.java:119)
 at java.lang.reflect.Constructor.constructNative(Native Method)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
 at android.view.LayoutInflater.createView(LayoutInflater.java:594)
 at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
 at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
 at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
 at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
 at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
 at android.app.Activity.setContentView(Activity.java:1928)
 at com.example.thomas.anime.Button_Anime.onCreate(Button_Anime.java:21)
 at android.app.Activity.performCreate(Activity.java:5243)
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2140)
 at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
 at android.app.ActivityThread.access$700(ActivityThread.java:135)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:137)
 at android.app.ActivityThread.main(ActivityThread.java:4998)
 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:777)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
 at dalvik.system.NativeStart.main(Native Method)
  --- allocation failed for scaled bitmap
 D/AndroidRuntime(1723): Shutting down VM
  threadid=1: thread exiting with uncaught exception (group=0xb3a8fb90)

记录 cat 以查找使用 Anime_loading 时发生的错误 msf

  FATAL EXCEPTION: main
  Process: com.example.thomas, PID: 1723
 java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.thomas/com.example.thomas.anime.Button_Anime}: android.view.InflateException: Binary XML file line #17: Error inflating class <unknown>
  E/AndroidRuntime(1723):   at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2176)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
 at android.app.ActivityThread.access$700(ActivityThread.java:135)
 at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
 at android.os.Handler.dispatchMessage(Handler.java:102)
 at android.os.Looper.loop(Looper.java:137)
 at android.app.ActivityThread.main(ActivityThread.java:4998)
 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:777)
 at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
 at dalvik.system.NativeStart.main(Native Method)
 Caused by: android.view.InflateException: Binary XML file line #17: Error inflating class <unknown>
 at android.view.LayoutInflater.createView(LayoutInflater.java:620)
 at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:56)
 at android.view.LayoutInflater.onCreateView(LayoutInflater.java:669)
 at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:694)
 at android.view.LayoutInflater.rInflate(LayoutInflater.java:755)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:492)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:397)
 at android.view.LayoutInflater.inflate(LayoutInflater.java:353)
 at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:290)
 at android.app.Activity.setContentView(Activity.java:1928)
 at com.example.thomas.anime.Button_Anime.onCreate(Button_Anime.java:21)
 at android.app.Activity.performCreate(Activity.java:5243)
 at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
 at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2140)
 ... 11 more
 Caused by: java.lang.reflect.InvocationTargetException
 at java.lang.reflect.Constructor.constructNative(Native Method)
 at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
 at android.view.LayoutInflater.createView(LayoutInflater.java:594)
 ... 24 more
 Caused by: java.lang.OutOfMemoryError
 at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
 at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:575)
 at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:410)
 at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:840)
 at android.content.res.Resources.loadDrawable(Resources.java:2110)
 at android.content.res.Resources.getDrawable     
 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.TypedArray.getDrawable(TypedArray.java:602)
 at android.widget.ImageView.<init>(ImageView.java:129)
 at android.widget.ImageView.<init>(ImageView.java:119)
 ... 27 more

为什么不创建一个像这样的动画列表，而不是在运行时解码资源：

进入动画文件夹

动画按钮.xml

<?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/animation1"
android:duration="@integer/frame_animation_time_ms"/>
<item
android:drawable="@drawable/animation2"
android:duration="@integer/frame_animation_time_ms"/>
<item
android:drawable="@drawable/animation3"
android:duration="@integer/frame_animation_time_ms"/>
<item
android:drawable="@drawable/animation4"
android:duration="@integer/frame_animation_time_ms"/>
<item
android:drawable="@drawable/animation5"
android:duration="@integer/frame_animation_time_ms"/>
<item
android:drawable="@drawable/animation6"
android:duration="@integer/frame_animation_time_ms"/>

</animation-list>

这位于布局内部

<ImageView
android:id="@+id/myImageView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@anim/anim_button" />

这是运行它的代码

private void animateImageView() {

AnimationDrawable imageViewAnimation = (AnimationDrawable) imageView.getBackground();
imageViewAnimation.setVisible(true, true);

}