所以我使用startActivityForResult（）和SetResult来返回数据，但是当使用set result（）和finish（）时，活动就会死掉而不会回到第一个......
在MainActivity类中，startActivityForResult是一个警报活动，因为我的应用程序是警报/提醒，在我的课程中我有另一个类是适配器
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
startActivity(new Intent(MainActivity.this, AlarmChooser.class));
}
public class AlarmAdapter extends ArrayAdapter<MyAlarm> {
Activity activity;
int layoutResource;
MyAlarm alarm;
ArrayList<MyAlarm> mData = new ArrayList<>();
public AlarmAdapter(Activity act, int resource, ArrayList<MyAlarm> data) {
super(act, resource, data);
activity = act;
layoutResource = resource;
mData = data;
notifyDataSetChanged();
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
View row = convertView;
ViewHolder holder = null;
if(row==null || row.getTag()==null){
LayoutInflater inflater = LayoutInflater.from(activity);
row = inflater.inflate(layoutResource,null);
holder=new ViewHolder();
holder.mTitle=(TextView)row.findViewById(R.id.name);
holder.mDate=(TextView)row.findViewById(R.id.dateText);
holder.mTime=(TextView)row.findViewById(R.id.timeText);
row.setTag(holder);
}else{
holder = (ViewHolder)row.getTag();
}
holder.myAlarm = getItem(position);
holder.mTitle.setText(holder.myAlarm.getTitle());
holder.mDate.setText(holder.myAlarm.getMonth()+" "+holder.myAlarm.getDay()+", "+holder.myAlarm.getYear());
final ViewHolder finalHolder = holder;
holder.mTitle.setOnClickListener(new View.OnClickListener() {
public void onClick(View view) {
Cursor cursor = dba.getnameofAlarm(title);
if (cursor.moveToFirst()) {
do {
String yearData = (cursor.getString(cursor.getColumnIndex(Constants.COLUMN_YEAR)));
String monthData=(cursor.getString(cursor.getColumnIndex(Constants.COLUMN_MONTH)));
String dayData=(cursor.getString(cursor.getColumnIndex(Constants.COLUMN_DAY)));
String hourData=(cursor.getString(cursor.getColumnIndex(Constants.COLUMN_HOUR)));
String minuteData=(cursor.getString(cursor.getColumnIndex(Constants.COLUMN_MINUTE)));
String titleData=(cursor.getString(cursor.getColumnIndex(Constants.COLUMN_NAME)));
String typeData = cursor.getString(cursor.getColumnIndex(Constants.COLUMN_TYPE));
Log.e("YEAR", yearData);
Log.e("MONTH",monthData);
Log.e("DAY",dayData);
Log.e("HOUR",hourData);
Log.e("MINUTE",minuteData);
Log.e("TITLE",titleData);
Log.e("TYPE",typeData);
Class next = null;
switch (typeData) {
case "TimeDateRem":
next = TimeDateRem.class;
break;
case "BirthdayRem":
next = BirthdayRem.class;
break;
case "HolidayReminderKuwait":
next = HolidayReminderKuwait.class;
break;
case "HolidayReminderLebanon":
next = HolidayReminderLebanon.class;
break;
case "HolidayReminderSaudiArabia":
next = HolidayReminderSaudiArabia.class;
break;
case "HolidayReminderUAE":
next = HolidayReminderUAE.class;
break;
}
if (next != null) {
Intent return_intent = new Intent(MainActivity.this, next);
return_intent.putExtra("alarm_title", titleData);
return_intent.putExtra("alarm_month", monthData);
return_intent.putExtra("alarm_year", yearData);
return_intent.putExtra("alarm_day", dayData);
return_intent.putExtra("alarm_hour", hourData);
return_intent.putExtra("alarm_minute", minuteData);
next_intent.putExtra("alarm_content", contenttt);
return_intent.putExtra("FROM_ACTIVITY", "MainActivity");
setResult(RESULT_OK, return_intent);
finish();
}
} while (cursor.moveToNext());
cursor.close();
}
}
});
return row;
}
}
class ViewHolder{
MyAlarm myAlarm;
TextView mTitle;
TextView mDate;
TextView mTime;
TextView mContent;
TextView mID;
}
}
这是我的TimeDateRem，其中有OnActivityResult
private void setAlarm(Calendar targetCal) {
info.setText("\n\n***\n"
+ "Alarm is set @ " + targetCal.getTime() + "\n"
+ "***\n");
Intent intent = new Intent(getBaseContext(), AlarmReceiver.class);
pendingIntent = PendingIntent.getBroadcast(getBaseContext(), RQS_1, intent, 0);
alarmManager = (AlarmManager) getSystemService(Context.ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, targetCal.getTimeInMillis(), pendingIntent);
//notification
Intent alarmIIntent = new Intent(this, AlarmReceiver.class);
PendingIntent pIntent = PendingIntent.getBroadcast(this, 0, alarmIIntent, PendingIntent.FLAG_UPDATE_CURRENT);
AlarmManager alarmManager = (AlarmManager) getSystemService(ALARM_SERVICE);
alarmManager.set(AlarmManager.RTC_WAKEUP, targetCal.getTimeInMillis(), pIntent);
Intent intent_ForResult = new Intent(TimeDateRem.this, MainActivity.class);
intent_ForResult.putExtra("title", title.getText().toString().trim());
intent_ForResult.putExtra("day", pickerDate.getDayOfMonth());
intent_ForResult.putExtra("month", pickerDate.getMonth());
intent_ForResult.putExtra("year", pickerDate.getYear());
intent_ForResult.putExtra("hour", pickerTime.getCurrentHour());
intent_ForResult.putExtra("minute", pickerTime.getCurrentMinute());
intent_ForResult.putExtra("type", "TimeDateRem");
startActivityForResult(intent_ForResult, REQUEST);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == REQUEST) {
if (resultCode == RESULT_OK) {
Bundle extras = data.getExtras();
String previousActivity = extras.getString("FROM_ACTIVITY");
if (previousActivity.equals("MainActivity")) {
String titles = extras.getString("alarm_title");
int year_intent = extras.getInt("alarm_year");
int month_intent = extras.getInt("alarm_month");
int day_intent = extras.getInt("alarm_day");
int minute_intent = extras.getInt("alarm_minute");
int hour_intent = extras.getInt("alarm_hour");
String year = String.valueOf(year_intent);
String month = String.valueOf(month_intent);
String day = String.valueOf(day_intent);
String minute = String.valueOf(minute_intent);
String hour = String.valueOf(hour_intent);
title.setText(titles);
pickerTime.setCurrentHour(Integer.parseInt(hour));
pickerTime.setCurrentMinute(Integer.parseInt(minute));
pickerDate.init(
Integer.parseInt(year),
Integer.parseInt(month),
Integer.parseInt(day),
null
);
}
}
}
}
有人可以帮我解释为什么setResult不会把我送回我的主要活动吗？
答案 0 :(得分：1)
尝试使用以下内容：
activity.setResult(RESULT_OK, return_intent);
activity.finish();