Question

我是android编程的傻瓜，我正在尝试创建将短信记录到文件中的应用程序。 Iam遇到问题“方法getContentResolver（）未定义类型SMSObserver”，我不知道为什么......

以下是代码：

public class SMSObserver extends ContentObserver
{
SMSLogger smsLogger;

public SMSObserver(SMSLogger smsLogger) {
    super(new Handler());
    this.smsLogger = smsLogger;
}

@Override
public void onChange(boolean selfChange) {
    super.onChange(selfChange);
    querySMS();
}

protected void querySMS() {
    Uri uriSMS = Uri.parse("content://sms/");
    Cursor cur = getContentResolver().query(uriSMS, null, null, null, null);
    cur.moveToNext();
    String body = cur.getString(cur.getColumnIndex("body"));
    String add = cur.getString(cur.getColumnIndex("address"));
    String time = cur.getString(cur.getColumnIndex("date"));
    String protocol = cur.getString(cur.getColumnIndex("protocol"));
    String out = "";
    if (protocol == null)
        out = "Sending to "+add + ".Time:"+time +" - "+body;
    else out = "Receive from "+add + ".Time:"+time +" - "+body;
    /*logging action HERE...*/
}
}

和进口：

import android.database.ContentObserver;
import android.os.Handler;
import android.content.ContextWrapper;
import org.json.JSONException;
import org.json.JSONStringer;
import android.content.ContentResolver;
import android.content.Intent;
import android.content.BroadcastReceiver;
import android.database.Cursor;
import android.net.Uri;
import android.content.Context;
import android.os.RemoteException;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds;
import android.provider.ContactsContract.PhoneLookup;

请帮忙。

Answer 1

您只能在Context对象上调用该方法。试试这个：

public class SMSObserver extends ContentObserver
{
SMSLogger smsLogger;
Context context;

public SMSObserver(SMSLogger smsLogger, Context c) {
    super(new Handler());
    context = c;
    this.smsLogger = smsLogger;
}

protected void querySMS() {
    Uri uriSMS = Uri.parse("content://sms/");
    Cursor cur = context.getContentResolver().query(uriSMS, null, null, null, null);
}
}

Answer 2

扩展应用程序以保持上下文并静态访问它或者您可以将函数调用传递给ContentResolver中的每个库函数。目前您没有Context引用，因此您无法在此处调用getContentResolver（）。

SMS Logger：方法getContentResolver（）未定义类型

2 个答案: