Android SDK 2.2 开发环境安装

核心提示：import android.app.Activity;import android.os.Bundle;import android.widget.TextView;public class HelloAndroid extends Activity {@Overridepublic void onCreate(Bu

import android.app.Activity;

import android.os.Bundle;

import android.widget.TextView;

public class HelloAndroid extends Activity {

@Override

public void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

TextView tv = new TextView(this);

tv.setText("Hello, Android");

setContentView(tv);

}

}

3)运行

ADT 使运行非常简单:

选取 Run > Run.

选取 "Android Application".

(Hello World, 参见：http://androidappdocs.appspot.com/resources/tutorials/hello-world.html )

附：Android SDK release number:

Android SDK 2.2 Revision 1 (May 2010) API Level: 8 Requires SDK Tools r6 or higher. FroYo

Android SDK 2.1 Revision 2 (May 2010) API Level: 7 Requires SDK Tools r6 or higher. Eclair

Android SDK 2.1 Revision 1 (Jan 2010) API Level: 7 Requires SDK Tools r6 or higher. Eclair

Android SDK 2.0.1 API Level: 6 Requires SDK Tools r6 or higher. Eclair

Android SDK 2.0 API Level: 5 Requires SDK Tools r6 or higher. Eclair

Android SDK 1.6 Revision 3 (May 2010) API Level: 4 Requires SDK Tools r6 or higher. Donut

Android SDK 1.6 Revision 2 (Dec 2009) API Level: 4 Requires SDK Tools r6 or higher. Donut

Android SDK 1.6 Revision 1 (Sep 2009) API Level: 4 Requires SDK Tools r6 or higher. Donut

Android SDK 1.5 Revision 3 (Jul 2009) API Level: 3 Requires SDK Tools r6 or higher. Cupcake

Android SDK 1.5 Revision 2 (May 2009) API Level: 3 Requires SDK Tools r6 or higher. Cupcake

Android SDK 1.5 Revision 1 (Api 2009) API Level: 3 Requires SDK Tools r6 or higher. Cupcake

Android SDK 1.1 API Level: 2

Android SDK 1.0 API Level: 1