Android模似打电话程序实现

Android模似打电话程序实现今天我们用Android写了一个小程序，实现了打电话。首先，先新建一个Android项目Phone，然后修改Layout下Values中的String.xml，代码如下：<?xml version="1.0" encoding="utf-8"?><resources><string name="hello">Hello World, PhoneActivity!</string> <string name="app_name">Phone</string>  <string name="input_into">请输入要拨打的号码</string> <string name="dial_caption">拨打</string></resources>然后在main.xml中添加几个属性，代码如下：<TextView android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/input_into" /> <EditText android:layout_width="fill_parent" android:layout_height="wrap_content" android:id="@+id/phone_number"/> <Button android:layout_width="fill_parent" android:layout_height="wrap_content" android:text="@string/dial_caption" android:id="@+id/dial_btn"/>tlayout为布局，修改Main.xml的代码后将有如图的显示效果：  在R.Java中将自动生成如下代码：public static final class drawable { public static final int ic_launcher=0x7f020000; } public static final class id { public static final int dial_btn=0x7f050001; public static final int phone_number=0x7f050000; }public static final class string { public static final int app_name=0x7f040001; public static final int dial_caption=0x7f040003; public static final int hello=0x7f040000; public static final int input_into=0x7f040002; }在PhoneActivity.java文件中，有如下代码：package cn.class3g.activity;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class PhoneActivity extends Activity {  EditText numberEt; Button dialBtn;  @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); findViews(); dialBtn.setOnClickListener(myListener); }  public void findViews(){ numberEt = (EditText)this.findViewById(R.id.phone_number); dialBtn =(Button) this.findViewById(R.id.dial_btn); }  private OnClickListener myListener = new Button.OnClickListener(){ public void onClick(View v) {String phone_number = numberEt.getText().toString(); phone_number = phone_number.trim(); if(phone_number != null && !phone_number.equals("")){ Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+phone_number)); PhoneActivity.this.startActivity(intent); } } };}在AndroidManifest.xml中<application上方添加：<uses-sdk android:minSdkVersion="10" /> <uses-permission android:name="android.permission.CALL_PHONE"/>保存。打开手机虚似机，就可拨打电话了。请启动两个虚拟机来打。运行后效果如下图：  

以下是图片