我用带背景线的字符串取人的姓名和电话号码,并在某些地方使用它们。一切正常,但是我想做点什么。当该线程用完时,我想向用户展示一些东西。但是我不知道如何检查该线程的状况。如果您有帮助,我将不胜感激。预先感谢。
cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,
ContactsContract.Contacts.DISPLAY_NAME + " ASC");
AsyncTask.execute(new Runnable() {
@Override
public void run() {
while (cursor.moveToNext()){
String contactName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).trim();
}
cursor.close();
}
});
}
您可以这样操作:
public class Processing extends AsyncTask<Void, Void, Void>
ProgressDialog mProgress;
@Override
protected void onPreExecute() {
super.onPreExecute();
mProgress = new ProgressDialog(YOUR_ACTIVITIY.this);
mProgress.setTitle("Processing");
mProgress.setMessage("Please wait ...");
mProgress.show();
@Override
protected Void doInBackground(Void... voids) {
cursor = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,null,null,null,
ContactsContract.Contacts.DISPLAY_NAME + " ASC");
AsyncTask.execute(new Runnable() {
@Override
public void run() {
while (cursor.moveToNext()){
String contactName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
String phoneNumber = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)).trim();
}
cursor.close();
}
});
}
}
@Override
protected void onPostExecute(Void v) {
super.onPostExecute(v);
mProgress.dismiss();
}
}
我认为这就是您的意思
final TextView textView1 = findViewById(R.id.sample_text);
final Handler uiHandler = new Handler(Looper.getMainLooper());
AsyncTask.execute(new Runnable() {
@Override
public void run() {
//... your work
uiHandler.post(new Runnable() {
@Override
public void run() {
textView1.setText("finish");
}
});
}
});