解决使用AnimationDrawable无法播放动画的问题(转)
AnimationDrawable ad;ImageView iv = (ImageView) findViewById(R.id.animation_view);iv.setBackgroundResource(R.drawable.animation);ad = (AnimationDrawable) iv.getBackground();iv.getViewTreeObserver().addOnPreDrawListener(opdl);//当一个视图树将要绘制时产生事件,可以添加一个其事件处理函数 OnPreDrawListener opdl=new OnPreDrawListener(){ @Override public boolean onPreDraw() { ad.start(); return true; //注意此行返回的值 } };
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?第二种方式启动动画:(在Activity启动时会自动运行动画)
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ImageView image = (ImageView) findViewById(R.id.animation_view);image.setBackgroundResource(R.anim.oldsheep_wait); animationDrawable = (AnimationDrawable) image.getBackground(); RunAnim runAnim=new RunAnim(); runAnim.execute(""); class RunAnim extends AsyncTask<String, String, String>{ @Override protected String doInBackground(String... params) { if (!animationDrawable.isRunning()) { animationDrawable.stop(); animationDrawable.start(); } return ""; }}
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第三种方式启动动画:(在Activity启动时会自动运行动画)
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这个已经测试,肯定管用
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ImageView image = (ImageView) findViewById(R.id.animation_view);image.setBackgroundResource(R.anim.oldsheep_wait); animationDrawable = (AnimationDrawable) image.getBackground();image.post(new Runnable() { @Override public void run() { animationDrawable.start(); } });
?第四种方式启动动画:(在Activity启动时会自动运行动画)
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ImageView image = (ImageView) findViewById(R.id.animation_view);image.setBackgroundResource(R.anim.oldsheep_wait); animationDrawable = (AnimationDrawable) image.getBackground(); @Override public void onWindowFocusChanged(boolean hasFocus) { animationDrawable.start(); super.onWindowFocusChanged(hasFocus); }
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