说明详解导入android java.pdfVIP

packagecom.realaction.widgetsdemo;

importandroid.app.Activity;

importandroid.content.Intent;

importandroid.os.Bundle;

importandroid.view.Menu;

importandroid.view.View;

importandroid.view.View.OnClickListener;

importandroid.widget.Button;

publicclassMainActivityextendsActivityimplementsOnClickListener{

privateButtonbtnButtonDemo;

privateButtonbextViewDemo;

privateButtonbtnEditTextDemo;

privateButtonbtnImageViewDemo;

privateButtonbtnImageButtonDemo;

@Override

protectedvoidonCreate(BundlesavedInstanceState){

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

btnButtonDemo=(Button)findViewById(R.id.buttondemo);

bextViewDemo=(Button)findViewById(R.id.textviewdemo);

btnEditTextDemo=(Button)findViewById(R.id.edittextdemo);

btnImageViewDemo=(Button)findViewById(R.id.imageviewdemo);

btnImageButtonDemo=(Button)findViewById(R.id.imagebuttondemo);

btnButtonDemo.setOnClickListener(this);

bextViewDemo.setOnClickListener(this);

btnEditTextDemo.setOnClickListener(this);

btnImageViewDemo.setOnClickListener(this);

btnImageButtonDemo.setOnClickListener(this);

}

@Override

publicvoidonClick(Viewv){

//TODOAuto-generatedmethodstub

Intentintent=newIntent();

switch(v.getId()){

caseR.id.buttondemo:

intent.setClass(MainActivity.this,ButtonDemo.class);

break;

caseR.id.textviewdemo:

intent.setClass(MainActivity.this,TextViewDemo.class);

break;

caseR.id.edittextdemo:

intent.setClass(MainActivity.this,EditTextDemo.class);

break;

caseR.id.imageviewdemo:

intent.setClass(MainActivity.this,ImageViewDemo.class);

break;

caseR.id.imagebuttondemo:

intent.setClass(Mai