android图片由小慢慢变大的动画效果简单讲解

核心提示：< /LinearLayout>2.Java代码package wjq.WidgetDemo;import android.app.Activity;import android.os.Bundle;import android.widget.RatingBar;import android.widget.

< /LinearLayout>

2.Java代码

package wjq.WidgetDemo;

import android.app.Activity;

import android.os.Bundle;

import android.widget.RatingBar;

import android.widget.TextView;

import android.widget.RatingBar.OnRatingBarChangeListener;

public class RatingBarDemo extends Activity implements

OnRatingBarChangeListener {

private RatingBar mSmallRatingBar;

private RatingBar mIndicatorRatingBar;

private TextView mRatingText;

/*

* (non-Javadoc)

*

* @see android.app.Activity#onCreate(android.os.Bundle)

*/

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.ratingbarpage);

mRatingText = (TextView) findViewById(R.id.rating);

// We copy the most recently changed rating on to these indicator-only

// rating bars

mIndicatorRatingBar = (RatingBar) findViewById(R.id.indicator_ratingbar);

mSmallRatingBar = (RatingBar) findViewById(R.id.small_ratingbar);

// The different rating bars in the layout. Assign the listener to us.

((RatingBar)findViewById(R.id.ratingbar1)).setOnRatingBarChangeListener(this);

((RatingBar)findViewById(R.id.ratingbar2)).setOnRatingBarChangeListener(this);

}

@Override

public void onRatingChanged(RatingBar ratingBar, float rating,

boolean fromUser) {

final int numStars = ratingBar.getNumStars();

mRatingText.setText(

" 受欢迎度" + rating + "/" + numStars);

// Since this rating bar is updated to reflect any of the other rating

// bars, we should update it to the current values.

if (mIndicatorRatingBar.getNumStars() != numStars) {