如何处理来自搜索管理回调? [英] How to handle callback from Search Manager?
问题描述
让我们假设如下:
Activity A calls Search Manager
User searches, and search results are displayed in Activity B
User clicks on a list item in Activity B
App switches back to Activity A
我无法处理这种回调从b活动到活动A,因为我没有搜索管理意图(我想?)。
I am unable to handle this callback from Activity B to Activity A because I don't have the Search Manager intent (i think?).
呼叫搜索管理器(在活动A)
public boolean onOptionsItemSelected(MenuItem item) {
// Handle item selection
switch (item.getItemId()) {
case R.id.add_symbol:
onSearchRequested(); //result of search will show Activity B
return true;
default:
return super.onOptionsItemSelected(item);
}
}
返回到活动A之后用户选择一个项目
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
Quote myQuote = new Quote();
myQuote.name = (companies.get(position).name);
myQuote.symbol = (companies.get(position).symbol);
//TODO: add new quote to master quote list in Main
//TODO: serialize in Main
//TODO: go back to last activity
Intent myIntent = new Intent(getApplicationContext(), Main.class);
startActivityForResult(myIntent, PICK_COMPANY_REQUEST);
}
});
在活动带把手的回电:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == PICK_COMPANY_REQUEST) {
if (resultCode == RESULT_OK) {
Toast toast = Toast.makeText(getApplicationContext(), "Stock added", Toast.LENGTH_SHORT);
toast.show();
}
}
}
在 PICK_COMPANY_REQUEST
永远不会被发送到回调。为什么是这样?我假设,因为搜索Manager具有的意图,而不是活动B.我如何确保这个被调用?
The PICK_COMPANY_REQUEST
is never sent to the call back. Why is this? I am assuming because the Search Manager has the intent, and not Activity B. How can I make sure this gets invoked?
onActivityResult()不会被调用。为什么呢?
推荐答案
我真的怀疑你是否需要调用一个新的意图贵就贵onclickListener主要活动。 由于该活动已经在这里的堆栈你可以完成它
I really doubt whether you need to call a new intent for your Main activity on your onclickListener. Since the activity is already here in the stack you can just finish it
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> a, View v, int position, long id) {
Quote myQuote = new Quote();
myQuote.name = (companies.get(position).name);
myQuote.symbol = (companies.get(position).symbol);
//TODO: add new quote to master quote list in Main
//TODO: serialize in Main
//TODO: go back to last activity
//You need to use setresult here and pass the intent
setResult(RESULT_OK, myIntent );
finish();
}
});
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