Andorid下使用Junit测试框架，是步入正规的Androdid开发的必经之路，在Junit中可以得到组件，可以模拟发送事件，检测程序处理的正确性，对于软件开发者来说，必须写unite test!
源码：
package com.acitivity.test;import android.app.Activity;import android.os.Bundle;public class MainTestActivity extends Activity { /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); } public int add(int a, int b) { return a + b; } public int substract(int a, int b) { return a - b; }}测试源码：
package com.acitivity.test.test;import com.acitivity.test.MainTestActivity;import android.test.ActivityInstrumentationTestCase2;import android.util.Log;public class TestMainActivity extends ActivityInstrumentationTestCase2<MainTestActivity> { public TestMainActivity() { super("com.acitivity.test", MainTestActivity.class); } protected void setUp() throws Exception { Log.d("liuwei", "************************"); super.setUp(); } protected void tearDown() throws Exception { super.tearDown(); } public void testSum() { this.assertEquals(3, ((MainTestActivity) getActivity()).add(1, 2)); }}我把这两个代码，分别放在两个工程里。