今天想除錯多個task中棧的情況，在測試程式中呼叫另一個程式的activity，

程式碼片段如下：

        btnStartX=(Button)findViewById(R.id.btnStartX);        btnStartX.setOnClickListener(new View.OnClickListener() {      @Override   public void onClick(View v) {    // TODO Auto-generated method stub    Intent myIntent = new Intent();    myIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);    myIntent.setClassName("com.linc.TestBackStackXYZ"
 
,       "com.linc.TestBackStackXYZ.ActivityX");    startActivity(myIntent);   }  });

結果報錯：

java.lang.SecurityException: Permission Denial: starting Intent { flg=0x10000000 cmp=com.linc.TestBackStackXYZ/.ActivityX } from ProcessRecord{406f5a18 370:com.linc.TestBackStack/10042} (pid=370, uid=10042) requires null

        <activity
 
 android:name="ActivityX" android:label="ActivityX">         <intent-filter>           <action android:name="android.intent.action.MAIN" />          </intent-filter>        </activity>