android用Intent兑现Activity跳转

android用Intent实现Activity跳转

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 {@Overrideprotected 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();}});}@Overridepublic 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 {@Overrideprotected 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();}});}@Overridepublic 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;}}