android用Intent实现Activity跳转 java程序员

package com.example.intenttest;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		Button btn1=(Button)findViewById(R.id.b1);
		btn1.setOnClickListener(new Button.OnClickListener()
		{
			public void onClick(View view)
			{
				Intent intent=new Intent();
				intent.setClass(MainActivity.this,Test.class);
				startActivity(intent);
				MainActivity.this.finish();
			}
		});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}

 

package com.example.intenttest;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.widget.Button;

public class Test extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.test);
		Button btn2=(Button)findViewById(R.id.b2);
		btn2.setOnClickListener(new Button.OnClickListener()
		{
			public void onClick(View view)
			{
				Intent intent=new Intent();
				intent.setClass(Test.this,MainActivity.class);
				startActivity(intent);
				Test.this.finish();
			}
		});
	}
	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		// Inflate the menu; this adds items to the action bar if it is present.
		getMenuInflater().inflate(R.menu.main, menu);
		return true;
	}

}