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ip电话拨号器
ip电话拨号器的好处在于 当需要在每次拨打电话是添加一个前缀，如17951，来降低长途话费的资费，可以实现自动添加，而不用每次都手动添加，其中主要涉及到一下几个方面
1 先定义一个sharedpreferences，用来保存需要拨打电话时需要添加的前缀
package com.djf.ipnumber;import android.app.Activity;import android.content.SharedPreferences;import android.content.SharedPreferences.Editor;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.EditText;import android.widget.Toast;public class MainActivity extends Activity {private EditText et_number;private SharedPreferences sp; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); et_number = (EditText) findViewById(R.id.et_number); sp = getSharedPreferences("ipnumber", MODE_PRIVATE); } public void save(View view) { String ipnumber = et_number.getText().toString().trim(); Editor editor = sp.edit(); editor.putString("ipnumber", ipnumber); editor.commit(); Toast.makeText(this, "保存成功", 0).show(); }}
2 再定义一个广播接收者 broadcastreceiver ,用来监听当有电话拨出的事件，然后在拨出之前，将要拨打的电话加上一个前缀
package com.djf.ipnumber;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.SharedPreferences;public class OutCallReceiver extends BroadcastReceiver {private SharedPreferences sp; @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub String number = getResultData(); sp = context.getSharedPreferences("ipnumber",context.MODE_PRIVATE); String ipnumber = sp.getString("ipnumber", ""); setResultData(ipnumber+number); }}
3 注意需要添加的权限
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.djf.ipnumber"
android:versionCode="1"
android:versionName="1.0" >
<uses-sdk
android:minSdkVersion="9"
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="com.djf.ipnumber.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="com.djf.ipnumber.OutCallReceiver" >
<intent-filter>
<action android:name="android.intent.action.NEW_OUTGOING_CALL" >
</action>
</intent-filter>
</receiver>
</application>
</manifest>
ip电话拨号器