[英]drawable animation not workin
我想在我的列表中使用動畫繪制的,但是當我開始listActivity它crashs我從得知這個 ,當我刪除此2個動畫代碼
AnimationDrawable frameAnimation = (AnimationDrawable) GamePic.getBackground();
frameAnimation.start();
,它可以在我的手機(帶有Android 4.4的p7)中自行制作動畫,但在我嘗試過的其他手機(華碩記事本7,索尼c)中卻沒有動畫可繪制對象! 注意,當我使用此注冊碼時,所有手機都崩潰了,以下是我的compelet碼,怎么了?
public class MyList extends ListActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.games_list);
setListAdapter(new AA());
}
@Override
protected void onListItemClick(ListView l, View v, int position, long id) {
Toast.makeText(MyList.this, "item" + position + "is clicked", Toast.LENGTH_SHORT).show();
}
class AA extends ArrayAdapter<String> {
public AA() {
super(MyList.this, R.layout.games_list_layout, Resources2.GameListArray);
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
if (row == null) {
LayoutInflater inflater = getLayoutInflater();
row = inflater.inflate(R.layout.games_list_layout, parent, false);
}
TextView GameName = (TextView) row.findViewById(R.id.textView1);
ImageView GamePic = (ImageView) row.findViewById(R.id.imageView2);
ImageView Cartridge = (ImageView) row.findViewById(R.id.imageView1);
GameName.setText(Resources2.GameListArray[position]);
GamePic.setImageResource(Resources2.GamePicArray[position]);
Cartridge.setImageResource(Resources2.CartridgeFrame[Resources2.cartridgeColor[position]]);
AnimationDrawable frameAnimation = (AnimationDrawable) GamePic.getBackground();
frameAnimation.start();
return row;
}
}
}
謝謝
如文檔所述,您應該等到View附加到窗口后再開始動畫。 因此,您應該將OnAttachStateChangeListener添加到在附加視圖后將執行的視圖,然后從那里開始動畫。
ImageView img = (ImageView)v.findViewById(R.id.image);
img.setBackgroundResource(R.drawable.anim);
img.addOnAttachStateChangeListener(new View.OnAttachStateChangeListener() {
@Override
public void onViewAttachedToWindow(View v) {
AnimationDrawable animation = (AnimationDrawable) v.getBackground();
animation .start();
}
@Override
public void onViewDetachedFromWindow(View v) {
}
});
我發現了我的問題!
我用過GamePic.setImageResource(Resources2.GamePicArray [position]);
但我應該用
GamePic.setBackgroundResource(Resources2.GamePicArray[position]);
現在工作正常!
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