android - 试图查询联系人列表

Question

根据我之前得到的答案，我在 BroadcastReceiver 中有这段代码:

Uri lookupUri = Uri.withAppendedPath(PhoneLookup.CONTENT_FILTER_URI, Uri.encode(ASenderTel));
// Also tried;
//ContentResolver cr = getContentResolver();
//Context c = this;
Cursor c = getContentResolver().query(lookupUri, new String[] { PhoneLookup._ID }, null, null, null);
return (c.getCount() > 0);

...但是收到错误信息，“方法 getContentResolver() 未定义类型 KITSMSReceiver”

Answer 1

getContentResolver() 是 android.content.Context 类的一个方法。例如，您可以从您的 Activity 中访问它。为了实现它，将广播接收器放在 Activity 类中:

快速草稿:

public class MyActivity extends Activity {

  // ...

  private BroadcastReceiver myReceiver = new BroadcastReceiver() {
    public void onReceive(Context c, Intent i) {
      MyActivity.this.recvBroadcast(i); // forward to your activity
      MyActivity.this.getContentResolver();  // <-----
    }
  }};

  // ...

}