Android开发实例：打电话

package jiao.jiao;

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 PhoneActivity extends Activity {

    /** Called when the activity is first created. */

private EditText editText;

private Button button;

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

    editText= (EditText)this.findViewById(R.id.editText);

    button = (Button)this.findViewById(R.id.call);

    button.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {

String phoneNum =editText.getText().toString();

Intent intent = new Intent(Intent.ACTION_CALL,Uri.parse("tel:"+phoneNum));

PhoneActivity.this.startActivity(intent);

}

});

    }

}

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="wrap_content" 

     android:layout_height="wrap_content" 

     android:text="@string/hello"

     />

     <EditText

      android:layout_width="fill_parent" 

     android:layout_height="wrap_content" 

     android:id="@+id/editText"

      />

     <Button

      android:layout_width="wrap_content" 

     android:layout_height="wrap_content"

     android:id="@+id/call"

     android:text="@string/call_button" 

      />

LinearLayout>

xml version="1.0" encoding="utf-8"?>

<resources>

    <string name="hello">打电话string>

    <string name="app_name">Phonestring>

    <string name="call_button">打电话string>

resources>