电话拨号器

第一个程序：酷驴拨号器
首先建一个Android工程：phone
string.xml
<?xml version="1.0" encoding="utf-8"?>
<resources>
    <string name="hello">Hello World, PhoneActivity!</string>
    <string name="app_name">酷驴拨号器</string>
    <string name="mobile">请输入手机号</string>
    <string name="button">拨打此号码</string>
</resources>
main.xml
<?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="@string/mobile"
    />
<EditText 
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:id="@+id/mobile"
    />
<Button 
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="@string/button"
    android:id="@+id/button"
    />
</LinearLayout>
在drawable-hdpi中加入donkey.png，酷驴这张图片
PhoneActivity.Java
package cn.itcast.activity;

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 {
private EditText mobileText;
@Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        mobileText = (EditText)this.findViewById(R.id.mobile);
       
        Button button = (Button)this.findViewById(R.id.button);
        button.setOnClickListener(new View.OnClickListener() {

public void onClick(View v) {
String mobile = mobileText.getText().toString();
Intent intent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:" + mobile)); //动作
PhoneActivity.this.startActivity(intent);
}
});
    }
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="cn.itcast.activity"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/donkey" android:label="@string/app_name">
        <activity android:name=".PhoneActivity"
                  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>