Activityをパッケージ、クラス名を指定して呼び出す

package funa.fmtransmitter;

import android.app.Activity;
import android.os.Bundle;
import android.content.Intent;
import android.content.ComponentName;


public class FmTransmitter extends Activity
{
  /** Called when the activity is first created. */
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    try {
      // Intent intent=new Intent(this,NewActivity.class);
      Intent intent=new Intent(Intent.ACTION_MAIN);
      
      // setComponent と setClassName のどちらでも良い
      // intent.setComponent(new ComponentName(
      // "com.funa.take.restoresettings",
      // "com.funa.take.restoresettings.RestoreSettings"));
      
      // intent.setClassName("com.funa.take.restoresettings","com.funa.take.restoresettings.RestoreSettings");
      intent.setClassName("jp.co.sharp.android.FMtransmitter","jp.co.sharp.android.FMtransmitter.FMtransmitter");
      
      
      startActivity(intent);
      finish();
    } catch (Exception e){
      System.out.println(e);
      setContentView(R.layout.main);
    }
  }
}