(Android 基础知识review)通电话

1、main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >        <TextView         android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/a"        />        <EditText         android:id="@+id/num_et"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:hint="@string/c"        />        <Button         android:id="@+id/call_bt"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/b"        /></LinearLayout>

2、MainActivity

package com.njupt.phonetest;import android.net.Uri;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class MainActivity extends Activity {	private EditText et_num;	private Button bt_call;		@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);						et_num = (EditText) findViewById(R.id.num_et);		bt_call = (Button) findViewById(R.id.call_bt);				bt_call.setOnClickListener(new MyOnClickListener());	}	private class MyOnClickListener implements OnClickListener{		@Override		public void onClick(View v) {						String phoneNum = et_num.getText().toString();						/**			 * 以下是打电话的核心代码:			 */			Intent intent = new Intent();//创建意图对象			intent.setAction(Intent.ACTION_CALL);//设置意图的动作(拨打电话)			intent.setData(Uri.parse("tel:" + phoneNum));//设置意图的数据(电话号码)						startActivity(intent);//使用意图开启一个界面(打电话的界面)					}	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.main, menu);		return true;	}}

<?xml version="1.0" encoding="utf-8"?><resources>    <string name="app_name">PhoneTest</string>    <string name="action_settings">Settings</string>    <string name="hello_world">Hello world!</string>    <string name="a">请输入电话号码</string>    <string name="b">拨打号码</string>    <string name="c">请在这里输入号码</string></resources>

4、AndroidManifest.xml

在这个配置文件中加上:

<uses-permission android:name="android.permission.CALL_PHONE"/>

---------------------------以上用到的时候点击事件的处理方式的第一种。以下介绍事件处理的第二种、第三种处理方式------------

第二种事件处理方式：

1、MainActivity2

package com.njupt.phonetest;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class MainActivity2 extends Activity implements OnClickListener{	private EditText et_num;	private Button bt_call;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		et_num = (EditText) findViewById(R.id.num_et);		bt_call = (Button) findViewById(R.id.call_bt);		bt_call.setOnClickListener(this);	}	public void onClick(View v) {		String phoneNum = et_num.getText().toString();		/**		 * 以下是打电话的核心代码:		 */		Intent intent = new Intent();// 创建意图对象		intent.setAction(Intent.ACTION_CALL);// 设置意图的动作(拨打电话)		intent.setData(Uri.parse("tel:" + phoneNum));// 设置意图的数据(电话号码)		startActivity(intent);// 使用意图开启一个界面(打电话的界面)	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.main, menu);		return true;	}}

第三种事件处理的方式：

1、MainActivity3

package com.njupt.phonetest;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.EditText;public class MainActivity3 extends Activity {	private EditText et_num;	@Override	protected void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		setContentView(R.layout.main);		et_num = (EditText) findViewById(R.id.num_et);	}	public void hello(View v) {		String phoneNum = et_num.getText().toString();		/**		 * 以下是打电话的核心代码:		 */		Intent intent = new Intent();// 创建意图对象		intent.setAction(Intent.ACTION_CALL);// 设置意图的动作(拨打电话)		intent.setData(Uri.parse("tel:" + phoneNum));// 设置意图的数据(电话号码)		startActivity(intent);// 使用意图开启一个界面(打电话的界面)	}	@Override	public boolean onCreateOptionsMenu(Menu menu) {		// Inflate the menu; this adds items to the action bar if it is present.		getMenuInflater().inflate(R.menu.main, menu);		return true;	}}

2、main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:orientation="vertical" >        <TextView         android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="@string/a"        />        <EditText         android:id="@+id/num_et"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:hint="@string/c"        />        <Button         android:id="@+id/call_bt"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/b"        android:onClick="hello"        /></LinearLayout>

源码下载：http://download.csdn.net/detail/caihongshijie6/7600651