Android的通知时startActivity意图已经完成？ [英] android notify when startActivity intent has completed?
问题描述
我需要能够告诉时衍生的活动（通过意向）已完成，会怎么办呢？
这是我有：
alertDialog.setButton2（文本，新DialogInterface.OnClickListener（）{
@覆盖
公共无效的onClick（DialogInterface对话，诠释它）{
字符串URI =smsto：+;
意向意图=新的意图（Intent.ACTION_SENDTO，Uri.parse（URI））;
intent.putExtra（sms_body，PASSWORD_GENERATOR
.generatePasswordForSeed（seedText，hourToUse））;
intent.putExtra（compose_mode，真正的）;
// - 打开短信活动
startActivity（意向）;
// - 我现在需要重新调用活动，但经过短信活动已经完成。眼下短信关闭的时候了，因为我在没有了等待......
完（）;
startActivity（getIntent（））;
}
}）;
修改＃1
每下面的建议，我已经做了一些修改。然而，现在启动的短信活动只是坐在那儿，一旦文本发送。我不知道如何得到它返回到调用活动。这是我有：
alertDialog.setButton2（文本，新DialogInterface.OnClickListener（）{
@覆盖
公共无效的onClick（DialogInterface对话，诠释它）{
字符串URI =smsto：+;
意向意图=新的意图（Intent.ACTION_SENDTO，Uri.parse（URI））;
intent.putExtra（sms_body，PASSWORD_GENERATOR
.generatePasswordForSeed（seedText，hourToUse））;
intent.putExtra（compose_mode，真正的）;
startActivityForResult（意向，Activity.RESULT_OK）;
registerReceiver（新BroadcastReceiver的（）{
@覆盖
公共无效的onReceive（上下文的背景下，意图意图）{
完（）;
startActivity（getIntent（））;
}
}，新的IntentFilter（SMS_SENT））;
ContentResolver的ContentResolver的= getContentResolver（）;
处理程序处理程序=新的处理程序（）;
contentResolver.registerContentObserver（URI
.parse（内容：//短信），真，新ContentObserver（
处理）{
@覆盖
公共布尔deliverSelfNotifications（）{
的setResult（Activity.RESULT_OK）;
完（）;
返回super.deliverSelfNotifications（）;
}
@覆盖
公共无效的onChange（布尔selfChange）{
super.onChange（selfChange）;
的setResult（Activity.RESULT_OK）;
完（）;
}
}）;
}
}）;
alertDialog.show（）;
}
@覆盖
保护无效onActivityResult（INT申请code，INT结果code，意图数据）{
完（）;
startActivity（getIntent（））;
}
对于第二个问题跟帖回答： 出于好奇，你有没有考虑发送，而不需要创建活动的文字？我想问的原因是因为它似乎，从我可以告诉，没有用户体验正在发生的事情在您的短信活动。如果你没有意见，用户交互，那么也许仅仅定义一个线程或创建一个辅助类将完成这项工作。
原来的答案为第一个问题： 尝试使用startActivityForResult（意向，INT）。您当前的活动可以得到通知时，文本信息活动的结束。
I need to be able to tell when a spawned activity (via an intent) has completed, how would I do so?
This is what I have:
alertDialog.setButton2("Text", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String uri = "smsto:" + "";
Intent intent = new Intent(Intent.ACTION_SENDTO, Uri.parse(uri));
intent.putExtra("sms_body", PASSWORD_GENERATOR
.generatePasswordForSeed(seedText, hourToUse));
intent.putExtra("compose_mode", true);
// -- open the text message activity
startActivity(intent);
// -- I need to reset the calling activity now, but AFTER the text message activity has completed. Right now the SMS closes right away as I have no wait in...
finish();
startActivity(getIntent());
}
});
EDIT #1
Per the suggestions below, I've made some modifications. Now, however, the launched SMS activity just "sits there" once the text is sent. I can't figure out how to get it to return to the calling activity. This is what I have:
alertDialog.setButton2("Text", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String uri = "smsto:" + "";
Intent intent = new Intent(Intent.ACTION_SENDTO, Uri.parse(uri));
intent.putExtra("sms_body", PASSWORD_GENERATOR
.generatePasswordForSeed(seedText, hourToUse));
intent.putExtra("compose_mode", true);
startActivityForResult(intent, Activity.RESULT_OK);
registerReceiver(new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
finish();
startActivity(getIntent());
}
}, new IntentFilter("SMS_SENT"));
ContentResolver contentResolver = getContentResolver();
Handler handler = new Handler();
contentResolver.registerContentObserver(Uri
.parse("content://sms"), true, new ContentObserver(
handler) {
@Override
public boolean deliverSelfNotifications() {
setResult(Activity.RESULT_OK);
finish();
return super.deliverSelfNotifications();
}
@Override
public void onChange(boolean selfChange) {
super.onChange(selfChange);
setResult(Activity.RESULT_OK);
finish();
}
});
}
});
alertDialog.show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
finish();
startActivity(getIntent());
}
Followup Answer for second question: Out of curiosity, have you considered sending the text without creating an activity? The reason I ask is because it seems, from what I can tell, no user experience is happening within your SMS activity. If you don't have views and user interactions then maybe just defining a thread or creating a helper class would do the job.
Original Answer for first question: Try using startActivityForResult(Intent, int). Your current activity can get notified when the text message activity finishes.
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