一、电话拨号器

以下案例模拟android电话拨号器的实现

              

AndroidManifest.xml清单列表

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package
="com.ljq.phone"
android:versionCode
="1"
android:versionName
="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<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>

</application>
<uses-sdk android:minSdkVersion="7" />
<uses-permission android:name="android.permission.CALL_PHONE"/>
</manifest>

               

main.xml布局文件

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation
="vertical" android:layout_width="fill_parent"
android:layout_height
="fill_parent">
<TextView android:layout_width="fill_parent"
android:layout_height
="wrap_content"
android:text
="请输入电话号码" />
<EditText android:layout_width="fill_parent"
android:layout_height
="wrap_content"
android:id
="@+id/phone" />
<Button android:layout_width="wrap_content"
android:layout_height
="wrap_content"
android:text
="拔打此号码"
android:id
="@+id/button" />
</LinearLayout>

               

MainActivity类

package com.ljq.phone;

import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;

public class MainActivity extends Activity {
private EditText phone=null;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

phone
=(EditText)this.findViewById(R.id.phone);
Button button
=(Button)this.findViewById(R.id.button);
button.setOnClickListener(
new View.OnClickListener(){

public void onClick(View v) {
String tel
=phone.getText().toString();
//方法一, 使用Intent目的: 激活android组件
//Intent intent=new Intent();
//intent.setAction("android.intent.action.CALL");
//intent.setData(Uri.parse("tel:"+tel));
//方法二
Intent intent=new Intent("android.intent.action.CALL", Uri.parse("tel:"+tel));
//方法的内部会自动为intent对象设置类别:android.intent.category.DEFAULT
startActivity(intent);
}
});
}
}

          

运行结果:

界面初始化

              

电话拨打效果

posted on 2011-05-07 14:52  Ruthless  阅读(1924)  评论(0编辑  收藏  举报