采用显示意图开启另外的一个界面

package visizen.com.startotheractivity;

import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    }

    public void gotoOther(View view){
        Intent intent=new Intent(this,OtherActivity.class);
        startActivity(intent);
    }

    public void gotoPhoto(View view){
        Intent intent=new Intent();
        intent.setClassName("visizen.com.httpclient", "visizen.com.httpclient.MainActivity");
        startActivity(intent);
    }
}