我在 stackoverflow 和 google 上看到了很多类似的问题和答案，但没有运气。尝试从联系人获取电话号码时，onActivityResult 的 resultCode 始终为 0。这是代码，请帮助我，我将非常感谢你。`
package april19ideas.call.blocker;
import java.util.ArrayList;
import java.util.Collections;
import android.app.Activity;
import android.app.AlertDialog;
import android.app.ListActivity;
import android.content.ContentResolver;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.pm.PackageManager;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.provider.ContactsContract;
import android.provider.ContactsContract.PhoneLookup;
import android.text.InputType;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.EditText;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class DNDCallBlockerBlackListActivity extends ListActivity {
private static final String TAG = "DNDCallBlockerBlackListActivity";
private static final int PICK_CONTACT = 3;
private static final int PICK_LOG = 4;
private static final String BLACKLIST_PREF = "blacklist";
private ArrayList<String> m_phones;
private ArrayList<String> m_contacts;
private LayoutInflater m_Inflater;
private ArrayAdapter<String> m_adapter;
private SharedPreferences settings;
private int checkedItem;
private Context myContext;
/**
* Called when the activity is first created. Responsible for initializing
* the UI.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
myContext = this;
settings = PreferenceManager.getDefaultSharedPreferences(myContext);
PackageManager manager = getPackageManager();
if (manager.checkSignatures("april19ideas.call.blocker",
"april19ideas.call.blocker.key") == PackageManager.SIGNATURE_MATCH) {
setContentView(R.layout.noad_blacklist);
} else {
setContentView(R.layout.blacklist);
}
m_Inflater = (LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
m_phones = new ArrayList<String>();
m_contacts = new ArrayList<String>();
String tmp_phones = settings.getString(BLACKLIST_PREF, "");
if (tmp_phones != "") {
String[] tmp_phonesArr = tmp_phones.split(", ");
Collections.addAll(m_phones, tmp_phonesArr);
for (String s : m_phones) {
// search contact for every saved phone number
ContentResolver cr = getContentResolver();
Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(s));
Cursor cur = cr.query(uri,
new String[] { PhoneLookup.DISPLAY_NAME }, null, null,
null);
if (cur.moveToFirst()) {
String name = cur.getString(cur
.getColumnIndex(PhoneLookup.DISPLAY_NAME));
m_contacts.add(name);
} else {
m_contacts.add("N/A");
}
cur.close();
}
} else {
// do nothing, list is empty
}
// this adapter makes the black list visible to user
m_adapter = new ArrayAdapter<String>(this,
R.layout.blacklist_list_item, m_phones) {
@Override
public View getView(int position, View reusableView,
ViewGroup parent) {
View row;
if (reusableView == null) {
row = m_Inflater
.inflate(R.layout.blacklist_list_item, null);
} else {
row = reusableView;
}
TextView tv1 = (TextView) row.findViewById(android.R.id.text1);
tv1.setText(getItem(position));
TextView tv2 = (TextView) row.findViewById(android.R.id.text2);
tv2.setText(m_contacts.get(position));
return row;
}
};
setListAdapter(m_adapter);
ListView lv = getListView();
lv.setTextFilterEnabled(true);
// to handle taps on list items
lv.setOnItemClickListener(new OnItemClickListener() {
public void onItemClick(AdapterView<?> parent, View view,
final int position, long id) {
// construct an alert dialog
AlertDialog.Builder alert = new AlertDialog.Builder(myContext);
// set icon, title and message
alert.setIcon(R.drawable.icon);
alert.setTitle(R.string.app_name);
alert.setMessage(m_phones.get(position) + " - "
+ m_contacts.get(position));
// configure two buttons
alert.setPositiveButton(R.string.message_remove,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
// when OK pressed, go to paypal donations
// web page
// remove item from list
m_phones.remove(position);
m_contacts.remove(position);
String tmp_phones = "";
if (m_phones.size() > 0) {
tmp_phones = m_phones.toString();
tmp_phones = tmp_phones.substring(1,
tmp_phones.length() - 1);
}
// save updated list to sharedpreferences
SharedPreferences.Editor editor = settings
.edit();
editor.putString(BLACKLIST_PREF, tmp_phones);
editor.commit();
// refresh ui
m_adapter.notifyDataSetChanged();
// inform user
String toast_text = getString(R.string.phone_removed);
Toast.makeText(getApplicationContext(),
toast_text, Toast.LENGTH_SHORT).show();
}
});
alert.setNegativeButton(R.string.message_keep,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog,
int whichButton) {
// Canceled. Do nothing.
}
});
// show the dialog window
alert.show();
}
});
}
public void pickFromContacts(View target) {
// start contact list activity to pick one phone number
Intent intent = new Intent(Intent.ACTION_PICK,
ContactsContract.Contacts.CONTENT_URI);
intent.setType(ContactsContract.CommonDataKinds.Phone.CONTENT_TYPE);
startActivityForResult(intent, PICK_CONTACT);
}
public void pickFromCallLog(View target) {
// start callog list activity to pick one phone number
Intent intent = new Intent(DNDCallBlockerBlackListActivity.this,
DNDCallBlockerCallogListActivity.class);
startActivityForResult(intent, PICK_LOG);
}
@Override
protected void onActivityResult(int reqCode, int resultCode, Intent data) {
//resultCode = -1;
Log.e("resultCode", reqCode+ ":" + resultCode);
super.onActivityResult(reqCode, resultCode, data);
Log.e("reqCode",""+reqCode);
switch (reqCode) {
case (PICK_CONTACT):
Log.e("PICK_CONTACT", "PICK_CONTACT" + resultCode);
if (resultCode == Activity.RESULT_OK) {
Log.e("PICK_CONTACT1", "PICK_CONTACT1");
Uri contactData = data.getData();
// somehow could be possible that data.getData is null :(
if (contactData != null) {
Cursor c = managedQuery(contactData, null, null, null, null);
// get selected phone number & contact name
if (c.moveToFirst()) {
try {
m_phones.add(c
.getString(
c.getColumnIndexOrThrow(ContactsContract.CommonDataKinds.Phone.NUMBER))
.trim());
m_contacts
.add(c.getString(
c.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME))
.trim());
// add new item to list
String tmp_phones = m_phones.toString();
tmp_phones = tmp_phones.substring(1,
tmp_phones.length() - 1);
// save to sharedpreferences
SharedPreferences.Editor editor = settings.edit();
editor.putString(BLACKLIST_PREF, tmp_phones);
editor.commit();
// refresh ui
m_adapter.notifyDataSetChanged();
// inform user
String toast_text = getString(R.string.phone_added);
Toast.makeText(getApplicationContext(), toast_text,
Toast.LENGTH_SHORT).show();
} catch (IllegalArgumentException e) {
Log.e(TAG, e.getMessage());
}
}
c.close();
}
}
else {
// gracefully handle failure
Log.w("DEBUG_TAG", "Warning: activity result not ok");
}
break;
case (PICK_LOG):
Log.e("PICK_LOG", "PICK_LOG");
if (resultCode == Activity.RESULT_OK) {
Log.e("PICK_LOG1", "PICK_LOG1");
String numtoadd = data.getAction();
m_phones.add(numtoadd);
// search contact for every saved phone number
ContentResolver cr = getContentResolver();
Uri uri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI,
Uri.encode(numtoadd));
Cursor cur = cr.query(uri,
new String[] { PhoneLookup.DISPLAY_NAME }, null, null,
null);
if (cur.moveToFirst()) {
String name = cur.getString(cur
.getColumnIndex(PhoneLookup.DISPLAY_NAME));
m_contacts.add(name);
} else {
m_contacts.add("N/A");
}
cur.close();
// add new item to list
String tmp_phones = m_phones.toString();
tmp_phones = tmp_phones.substring(1, tmp_phones.length() - 1);
// save to sharedpreferences
SharedPreferences.Editor editor = settings.edit();
editor.putString(BLACKLIST_PREF, tmp_phones);
editor.commit();
// refresh ui
m_adapter.notifyDataSetChanged();
// inform user
String toast_text = getString(R.string.phone_added);
Toast.makeText(getApplicationContext(), toast_text,
Toast.LENGTH_SHORT).show();
}
else {
// gracefully handle failure
Log.w("DEBUG_TAG", "Warning: activity result not ok");
}
break;
}
}
public void addPhoneNumber(View target) {
final AlertDialog.Builder alert = new AlertDialog.Builder(this);
final EditText input = new EditText(this);
checkedItem = 0;
input.setInputType(InputType.TYPE_CLASS_PHONE);
input.setHint(R.string.hint_typehere);
alert.setSingleChoiceItems(R.array.manual_phonenumber_types, 0,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int item) {
checkedItem = item;
}
});
alert.setView(input);
alert.setIcon(R.drawable.icon);
alert.setTitle(R.string.title_add_number);
alert.setPositiveButton(R.string.message_ok,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
String value = input.getText().toString().trim();
if (!value.equals("")) {
switch (checkedItem) {
case 1:
value = value.trim() + "*";
break;
case 2:
value = "*" + value.trim() + "*";
break;
case 3:
value = "*" + value.trim();
break;
default:
break;
}
// put input to list
m_phones.add(value);
m_contacts.add("N/A");
// add new item to list
String tmp_phones = m_phones.toString();
tmp_phones = tmp_phones.substring(1,
tmp_phones.length() - 1);
// save to sharedpreferences
SharedPreferences.Editor editor = settings.edit();
editor.putString(BLACKLIST_PREF, tmp_phones);
editor.commit();
// refresh ui
m_adapter.notifyDataSetChanged();
// inform user
String toast_text = getString(R.string.phone_added);
Toast.makeText(getApplicationContext(), toast_text,
Toast.LENGTH_SHORT).show();
}
}
});
alert.setNegativeButton(R.string.message_cancel,
new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.cancel();
}
});
alert.show();
}
}
`