通过广播实现对特定号码的拦截，写两个按钮，一个是正常拨号，一个是拨号后进行拦截
注意要在配置文件内添加权限
样式
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| <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<Button
android:id="@+id/bt1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="call"
android:text="正常拨号" />
<Button
android:id="@+id/bt2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:onClick="block"
android:text="加入拦截" />
</LinearLayout>
|
Activity
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| package com.example.broadcastreceiver;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Button bt1=(Button)findViewById(R.id.bt1);
Button bt2=(Button)findViewById(R.id.bt2);
}
public void call(View v){
Intent i = new Intent("正常拨号123456");
sendOrderedBroadcast(i,null);
}
public void block(View v){
Intent i = new Intent("被拦截的拨号123456");
sendOrderedBroadcast(i,null);
}
}
|
接收者类
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| package com.example.broadcastreceiver;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class MyBroadcastReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String str=intent.getAction().toString();
Toast.makeText(context,"接收到的广播信息:"+str, Toast.LENGTH_SHORT).show();
}
}
|
拦截类
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| package com.example.broadcastreceiver;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;
public class MyBlock extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String str1=intent.getAction().toString();
Toast.makeText(context,"拦截到的广播信息:"+str1, Toast.LENGTH_SHORT).show();
abortBroadcast();
Toast.makeText(context,"已清除广播", Toast.LENGTH_SHORT).show();
}
}
|
manifest
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| <?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:dist="http://schemas.android.com/apk/distribution"
package="com.example.broadcastreceiver">
<dist:module dist:instant="true" />
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<receiver
android:name=".MyBroadcastReceiver"
android:enabled="true"
android:exported="true">
<intent-filter android:priority="0">
<action android:name="正常拨号123456"/>
<action android:name="被拦截的拨号123456"/>
</intent-filter>
</receiver>
<receiver
android:name=".MyBlock"
android:enabled="true"
android:exported="true">
<intent-filter android:priority="1">
<action android:name="被拦截的拨号123456"/>
</intent-filter>
</receiver>
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>
|
结果
