android BroadcastReceiver组件简单的使用

1.清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.ipdail"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />
    <uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".MainActivity"
            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=".OutCallReceiver">
            <intent-filter>
                <action android:name="android.intent.action.NEW_OUTGOING_CALL" />
            </intent-filter>
        </receiver>
    </application>

</manifest>

2.layout

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
      android:orientation="vertical"
    tools:context="com.example.ipdail.MainActivity" >

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="请输入要设置ip电话" />

    <EditText
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:id="@+id/et_ip"
        android:inputType="phone"
         />

    <Button
        android:onClick="click"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="设置"
         />

</LinearLayout>

3.activity

package com.example.ipdail;

import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;
import android.text.TextUtils;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;

public class MainActivity extends ActionBarActivity {

    private EditText et_ip;

    private SharedPreferences sp;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        et_ip = (EditText)findViewById(R.id.et_ip);

        sp = getSharedPreferences("ip", MODE_PRIVATE);

        String ip = sp.getString("ip", "");
        et_ip.setText(ip);

    }

    public void click(View view)
    {

        String ip = et_ip.getText().toString().trim();

        if(TextUtils.isEmpty(ip))
        {

            Toast.makeText(this, "设置ip不能为空", 0).show();
            return;
        }

        Editor editor = sp.edit();

        editor.putString("ip", ip);
        editor.commit();

        Toast.makeText(this, "设置成功", 0).show();
    }

}

4.OutCallReceiver

package com.example.ipdail;

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;

public class OutCallReceiver extends BroadcastReceiver {

    //当有广播事假产生的时候就会执行onreceive方法
    @Override
    public void onReceive(Context context, Intent intent) {

        //获取外拨的电话号码
        String number = getResultData();

        //替换掉这个号码
        SharedPreferences sp = context.getSharedPreferences("ip", Context.MODE_PRIVATE);

        String ip = sp.getString("ip", "");

        String newnumber = ip + number;
        //设置外拨电话号码
        setResultData(newnumber);

    }

}