案例功能：实现拦截保存到手机中的号码。
1.广播接收者的创建：点击包名,选择New,在Other中选择BroadcastReceiver，点击结束。然后根据自己的要求编写代码，如下所示：
package com.example.bz0209.lanjie;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
public class MyReceiver
extends BroadcastReceiver {
public MyReceiver() {
}
@Override
public void onReceive(Context context, Intent intent) {
// TODO: This method is called when the BroadcastReceiver is receiving
// an Intent broadcast.
String outcallnumber = getResultData();
SharedPreferences sp = context.getSharedPreferences(
"config", Context.
MODE_PRIVATE);
String number = sp.getString(
"number",
"");
if (outcallnumber.equals(number)) {
setResultData(
null);
}
}
}
2.注册广播接收者，在AndroidMainfest.xml中编写代码：
<?xml version="1.0" encoding="utf-8"?>
<
manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.bz0209.lanjie">
<
application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<
activity android:name=".MainActivity">
<
intent-filter>
<
action android:name="android.intent.action.MAIN" />
<
category android:name="android.intent.category.LAUNCHER" />
</
intent-filter>
</
activity>
<
receiver
android:name=".MyReceiver"
android:enabled="true"
android:exported="true">
<
intent-filter>
<
action android:name="android.intent.action.NEW_OUTGOING_CALL"></
action>
</
intent-filter>
</
receiver>
</
application>
<
uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"></
uses-permission>
</
manifest>
3.编写用户交互界面，如下所示：
<?xml version="1.0" encoding="utf-8"?>
<
RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:id="@+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/sdz"
android:padding="15dp"
tools:context="com.example.bz0209.lanjie.MainActivity">
<
EditText
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="@+id/et_ipnumber"
android:hint="请输入拦截的号码"
/>
<
Button
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="@+id/et_ipnumber"
android:layout_centerHorizontal="true"
android:background="#ACD6FF"
android:onClick="click"
android:paddingLeft="5dp"
android:paddingRight="5dp"
android:text="保存拦截号码"
android:textSize="16sp"
/>
</
RelativeLayout>
4.在MainActivity中编写点击保存拦截号码按钮时事件处理，代码如下：
package com.example.bz0209.lanjie;
import android.content.Context;
import android.content.SharedPreferences;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity
extends AppCompatActivity {
private EditText
et_ipnumber;
private SharedPreferences
sp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.
activity_main);
et_ipnumber=(EditText) findViewById(R.id.
et_ipnumber);
sp=getSharedPreferences(
"config",
MODE_PRIVATE);
}
public void click(View view){
String number=
et_ipnumber.getText().toString().trim();
SharedPreferences.Editor editor=
sp.edit();
editor.putString(
"number",number);
editor.commit();
Toast.
makeText(
this,
"保存成功",Toast.
LENGTH_SHORT).show();
}
}
5.效果图如下所示：
