暈死的錯誤,改了半天也沒想到是這樣的原因,基礎正要呀。。。
先看一下警告信息:
07-07 08:32:19.540: WARN/WindowManager(74): Failed looking up window
07-07 08:32:19.540: WARN/WindowManager(74): java.lang.IllegalArgumentException:Requested window android.os.BinderProxy@450b2f48 does not exist
07-07 08:32:19.540: WARN/WindowManager(74): at com.android.server.WindowManagerService.windowForClientLocked(WindowManagerService.java:9293)
07-07 08:32:19.540: WARN/WindowManager(74): at com.android.server.WindowManagerService.windowForClientLocked(WindowManagerService.java:9284)
07-07 08:32:19.540: WARN/WindowManager(74): at com.android.server.WindowManagerService.relayoutWindow(WindowManagerService.java:2364)
07-07 08:32:19.540: WARN/WindowManager(74): at com.android.server.WindowManagerService$Session.relayout(WindowManagerService.java:6782)
07-07 08:32:19.540: WARN/WindowManager(74): at android.view.IWindowSession$Stub.onTransact(IWindowSession.java:117)
07-07 08:32:19.540: WARN/WindowManager(74): at com.android.server.WindowManagerService$Session.onTransact(WindowManagerService.java:6743)
07-07 08:32:19.540: WARN/WindowManager(74): at android.os.Binder.execTransact(Binder.java:288)
07-07 08:32:19.540: WARN/WindowManager(74): atdalvik.system.NativeStart.run(Native Method)
Java代碼如下:
public class MyActivity extends Activity implements Runnable {
private static final int SEARCH_APP = 0;
private ProgressDialog pd;
private Handler mHandler = new Handler() {
public void handleMessage(Message msg) {
super.handleMessage(msg);
if (msg.what == SEARCH_APP) {
pd.dismiss();
}
}
};
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.show_app_grid);
pd = ProgressDialog.show(this, "請稍候···", "正在搜索你所安裝的程序···");
Thread t = new Thread(this);
t.start();
}
public void run() {
try {
Thread.sleep(3000);
} catch (InterruptedException e) {
e.printStackTrace();
}
mHandler.sendEmptyMessage(SEARCH_APP);
}
}
原因是語句Thread t = new Thread()沒有謝參數,因爲在實現多線時如果是實現的Runnable接口,必要Thread t = new Thread(Runnable runnable),所以把語句Thread t = new Thread()修改爲Thread t = new Thread(this)運行就正確了。