Question

我在我的项目中使用BroadcastReceiver隐藏短信我有两个按钮用于注册，一个用于取消注册广播接收器。

这是问题所在 - 当我按下按钮注册其开启广播但是当短信是接收器时，代码的功能不起作用它不会隐藏SMS。

在接收器代码中我正在检查bundle值是否不等于null然后只有代码才会执行隐藏部分现在我的问题是如何在sms开始接收时更改bundle值或者是否有任何方法听incommig sms

我正在提供完整的代码，请任何人找到解决方案

//我的Activity.java

package sam.ll;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.telephony.SmsMessage;
 import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.Toast;

public class samm extends Activity {
Button b1,b2;
BroadcastReceiver mReceiver;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    b1=(Button)findViewById(R.id.button1);
    b2=(Button)findViewById(R.id.button2);
    mReceiver  = new BroadcastReceiver() {


        @Override
        public void onReceive(Context context, Intent intent) {
            // TODO Auto-generated method stub
            Log.i("calling me "," !!!");
            System.out.println("podaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa");
            //---get the SMS message passed in---
            Bundle bundle = intent.getExtras();        
            System.out.println("bundle value issss"+bundle);
            SmsMessage[] msgs = null;
            String str = "";            
            if (bundle != null)
            {
                abortBroadcast();
                //---retrieve the SMS message received---
                Object[] pdus = (Object[]) bundle.get("pdus");
                msgs = new SmsMessage[pdus.length];            
                for (int i=0; i<msgs.length; i++){
                    msgs[i] = SmsMessage.createFromPdu((byte[])pdus[i]);                
                    str += "SMS from " + msgs[i].getOriginatingAddress();                     
                    str += " :";
                    str += msgs[i].getMessageBody().toString();
                    str += "\n";        
                }
                //---display the new SMS message---
                Toast.makeText(context, str, Toast.LENGTH_SHORT).show();
            }                 
        }
        };
    b1.setOnClickListener(new OnClickListener() {


        public void onClick(View v) {
            // TODO Auto-generated method stub
            IntentFilter intentFilter = new IntentFilter("android.intent.action.MAIN");
            samm.this.registerReceiver(mReceiver, intentFilter);

            Intent i = new Intent("android.intent.action.MAIN");
            sendBroadcast(i);

        }
    });
    b2.setOnClickListener(new OnClickListener() {


        public void onClick(View v) {
            // TODO Auto-generated method stub
            unregisterReceiver(mReceiver);
        }
    });

  }
}

// main.xml中

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
>
<TextView  
android:layout_width="fill_parent" 
android:layout_height="wrap_content" 
android:text="@string/hello"
/>
<Button android:text="Button" 
android:id="@+id/button1" 
android:layout_width="wrap_content"
android:layout_height="wrap_content">
</Button>
<Button android:text="Button" 
android:id="@+id/button2" 
android:layout_width="wrap_content" 
android:layout_height="wrap_content">
</Button>
</LinearLayout>

//的manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
  package="sam.ll"
  android:versionCode="1"
  android:versionName="1.0">
<uses-sdk android:minSdkVersion="8" />

<application android:icon="@drawable/icon" android:label="@string/app_name">
    <activity android:name=".samm"
              android:label="@string/app_name">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>
    <receiver android:name=".mReceiver" />
    <uses-permission android:name="android.permission.SEND_SMS">
</uses-permission>
<uses-permission android:name="android.permission.READ_SMS" />
<uses-permission android:name="android.permission.RECEIVE_SMS">
</uses-permission>

</application>
</manifest>

Answer 1

点击b1替换代码

b1.setOnClickListener(new OnClickListener() {


    public void onClick(View v) {
        // TODO Auto-generated method stub
        IntentFilter intentFilter = new IntentFilter("android.provider.Telephony.SMS_RECEIVED");
        samm.this.registerReceiver(mReceiver, intentFilter);
    }
});

Answer 2

当您单击第一个按钮时，接收器已注册以侦听由您自己的代码创建的意图“android.intent.action.MAIN”，并且没有附加任何捆绑（您不附加任何内容）。不要订阅这个虚假的意图，也不要将它发送给你自己的广播接收器。

要订阅收到的短信，您需要听取其他意图：

    IntentFilter intentSMSReceiver = new IntentFilter();
    intentSMSReceiver.addAction("android.intent.action.DATA_SMS_RECEIVED");
    intentSMSReceiver.addAction("android.provider.Telephony.SMS_RECEIVED");
    registerReceiver(mReceiver, intentSMSReceiver);

当您的设备收到短信时会发出此意图。

广播接收器中的Bundle值始终为null？

//我的Activity.java

// main.xml中

2 个答案: