Android 中的错误 -- 无法找到以下项的检测信息：ComponentInfo

例如，我有一个应用程序将调用联系人并且必须选择其中一个联系人。 但它并没有完全按照我想要的方式做。它向我显示错误Unable to find instrumentation info for: ComponentInfo{com.sample/com.sample.ContactsSelectInstrumentation}

以下是我的代码.. 这是我的活动课

 @Override  
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
Button button = (Button) findViewById(R.id.go);
button.setOnClickListener(mGoListener);
}
private OnClickListener mGoListener = new OnClickListener() {
public void onClick(View v) {
  startInstrumentation(new ComponentName(Test.this,
      ContactsFilterInstrumentation.class), null, null);
}
};

这是我的乐器课。

class ContactsFilterInstrumentation extends Instrumentation {  
@Override    
  public void onCreate(Bundle arguments) {

super.onCreate(arguments);
start(); 

} 

 @Override  

public void onStart() {

super.onStart();

Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setClassName(getTargetContext(), "com.android.phone.Dialer");
Activity activity = startActivitySync(intent);

Log.i("ContactsFilterInstrumentation", "Started: " + activity);
sendKeySync(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_M));
sendKeySync(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_M));
sendKeySync(new KeyEvent(KeyEvent.ACTION_DOWN, KeyEvent.KEYCODE_A));
sendKeySync(new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_A));
waitForIdleSync();
Log.i("ContactsFilterInstrumentation", "Done!");
finish(Activity.RESULT_OK, null);
}
}

任何人都可以帮助我吗？ 提前致谢。

目录结构应该是：

src
  package.x.y.z.test
      MainTest.java
      CustomInstrumentationRunner.java

然后在AndroidManifest.xml中，设置

<manifest package="package.x.y.z" ...

<instrumentation
        android:name="package.x.y.z.test.CustomInstrumentationRunner"

使用命令行调用上述包：

adb shell am instrumentation -w package.x.y.z/package.x.y.z.test.CustomInstrumentationRunner