android - 使用线程或异步任务的位图工厂动画

Question

这个问题是我在这个论坛上问过的多个问题的跟进，有关为什么我一直尝试的动画不起作用。

简要介绍一下以前的问题:

我的动画作为2个类的单独项目工作，但不起作用
当包含在我的包含多个类的项目中时。

使用“finish()”类

关闭了导致动画 Activity 的所有 Activity

该应用程序永远不会关闭或冻结，动画不会播放，但意图发生了
然后下一个 Activity 将成功打开/显示

首先使用10张图片，每张图片的大小为70-80 kb，然后使用，
每张10张30-34 kb大小的图像，效果仍然相同。

此后得出的结论是，我的主线程可能做了过多的工作，这可能是动画无法正确进行的原因。

因此，我使用2个线程对以下序列进行了编码，但仍得到相同的结果。
有人可以解释一下发生了什么吗，为什么我不能制作一个简单的动画呢？？？

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);
    }

}

使用anime_loading ..之后的日志猫。在单击按钮期间加载动画

 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)

使用anime_loading时发生错误msf的日志猫

  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

Answer 1

与其在运行时解码资源，不如创建一个动画列表，如下所示:

进入动画文件夹

anim_button.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>

这在布局内

<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);

}