求大神解Android获取来电的联系人问题

Question

获取到联系人name，可是把name设置成全局变量在MainActivity中只用却一直是nul

public class MyPhoneStateListener extends PhoneStateListener {

Context context;
public static String name;

public void onCallStateChanged(int state, String incomingNumber) {
    if((!(incomingNumber.isEmpty()))&&state == TelephonyManage
            r.CALL_STATE_RINGING){
            //在这个位置可以获取到联系人name，可是把name设置成全局变量在MainActivity中只用却一直是null，怎么破
        name = getContactNameFromPhoneBook(AppContext.getContext(), incomingNumber);

        Log.e("PhoneCallState", "来电： " + name);
    }
}
public String getContactNameFromPhoneBook(Context context, String phoneNum) {
    String contactName = "";
    String[] projection = { ContactsContract.PhoneLookup.DISPLAY_NAME,
            ContactsContract.PhoneLookup.NUMBER};
    Uri uri = Uri.withAppendedPath(
            ContactsContract.PhoneLookup.CONTENT_FILTER_URI,
            Uri.encode(phoneNum));
    Cursor cursor = context.getContentResolver().query(uri, projection,null, null, null);
    if (cursor.moveToFirst()) {
        contactName = cursor.getString(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
        cursor.close();
        return contactName;
    }
    else{
        return phoneNum;
    }
}

Answer 1

CodeForge的这个代码或许可以解答你的问题：http://www.codeforge.cn/article/303432