插一个注意点.在用ArrayAdapter的时候数据那里的类型必须是List<String> 不能是ArrayList<String>
1.在A.Activity中调用startActivityForResult()启动B.Activity后,再B.Activity中调用setResult() 方法后,A.Activity中的onResultActivity将会执行。
但遇到下列问题就不会执行了:
startActivityForResult()用法参照:http://www.cnblogs.com/liangstudyhome/p/3708296.html
- Activity的启动方式是singleTask 或者是singleMode
- 在传递的Intent中requescode小于0
- *** 就是在调startActivityForResult()的Activity在一个GroupActivity中( 其实是执行了GroupActivity的onResultActivity方法)
2.对上述问题的解决办法:
- 将Activity的启动方式改成stander
1. tab activity(想获取onResultActivity值的子Activity)中使用
1 getParent().startActivityForResult(intent,REQUEST);
2. 当子activity.finish 返回时,在ActivityGroup实现onActivityResult,内容类似于:
1 @Override 2 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3 // 向下传递 4 YourActivity currentActivity = (YourActivity) getLocalActivityManager() 5 .getCurrentActivity(); 6 currentActivity.onChildActivityResult(requestCode, resultCode, data); 7 }
onChildActivityResult是一个你自己实现的方法,用来处理返回结果的。
具体的一个例子:
1 @SuppressWarnings("deprecation") 2 private void tabChange(CompoundButton buttonView, boolean isChecked) { 3 if (isChecked) { 4 containerBordy.removeAllViews(); 5 Intent intent = null; 6 switch (buttonView.getId()) { 7 case R.id.tab_weather: 8 9 intent = new Intent(MainActivityTab.this, 10 WeatherActivityBaiDu.class); 11 break; 12 case R.id.tab_produce: 13 14 intent = new Intent(MainActivityTab.this, 15 ProductWarningActivity.class); 16 break; 17 case R.id.tab_im: 18 intent = new Intent(MainActivityTab.this, 19 ChatBriefActivity.class); 20 break; 21 22 case R.id.tab_diaster: 23 intent = new Intent(MainActivityTab.this, 24 RelevantForecastActivity.class); 25 break; 26 case R.id.tab_setting: 27 intent = new Intent(MainActivityTab.this, SettingActivity.class); 28 break; 29 case R.id.tab_more: 30 31 break; 32 33 } 34 35 intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP); 36 37 Window subActivity = mlam.startActivity("startActivity", intent); 38 containerBordy.addView(subActivity.getDecorView()); 39 40 } 41 42 }
上面的方法是将一个Activity加载到一个GroupActivity中。
要注意的是这的Activity是有一个startActivity的id,所以要将上述的onActivityResult方法变成:
1 @Override 2 protected void onActivityResult(int requestCode, int resultCode, Intent data) { 3 super.onActivityResult(requestCode, resultCode, data); 4 System.out.println("返回的是这里的onActivityResult"); 5 CommunicationActivity currentActivity = (CommunicationActivity) mlam 6 .getActivity("startActivity"); 7 8 // Activity a = mlam.getCurrentActivity() 9 System.out.println("currentActivity-->>" + currentActivity); 10 11 12 // System.out.println("requestCode-->>" + requestCode 13 // + " resultCode-->>" + resultCode + " data" 14 // + data.getIntExtra("blockID", 0)); 15 currentActivity.onActivityResultFromMainActivity(requestCode, 16 resultCode, data); 17 // currentActivity.YSOS(); 18 }
mlam对应的是LocalActivityManager.onActivityResultFromMainActivity这是子Activity中自己定义的方法。
时间: 2024-10-06 19:38:42