android gallery 图片大小,android-gallery游览图片点击图片放大

蔚落 2022-10-18 00:56 2阅读 0赞

package com.hua.com;

import android.app.Activity;

import android.content.Context;

import android.os.Bundle;

import android.view.View;

import android.view.ViewGroup;

import android.view.animation.Animation;

import android.view.animation.AnimationSet;

import android.view.animation.ScaleAnimation;

import android.widget.AdapterView;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.AdapterView.OnItemSelectedListener;

import android.widget.BaseAdapter;

import android.widget.Gallery;

import android.widget.ImageView;

public class TestGalleryActivity extends Activity \{

private Gallery gallery;

private AnimationSet manimationSet;

private int\[\] imgs;

@Override

public void onCreate(Bundle savedInstanceState) \{

super.onCreate(savedInstanceState);

setContentView(R.layout.main);

init();

private void init()\{

imgs=new int\[\]\{R.drawable.a,R.drawable.c,R.drawable.d,R.drawable.y,R.drawable.f\};

gallery = (Gallery)findViewById(R.id.gy\_main);

ImageAdapter imgAdapter = new ImageAdapter(this,imgs);

gallery.setAdapter(imgAdapter);

gallery.setSelection(imgs.length/2);

gallery.setOnItemClickListener(listener);

private OnItemClickListener listener = new OnItemClickListener()\{

@Override

public void onItemClick(AdapterView> parent, View view, int position,

long id) \{

if(position!=0&&position!=4)\{

AnimationSet animationSet = new AnimationSet(true);

if(manimationSet!=null&&manimationSet!=animationSet)\{

ScaleAnimation scaleAnimation = new ScaleAnimation(2,0.5f,2,0.5f,

Animation.RELATIVE\_TO\_SELF,0.5f, //使用动画播放图片

Animation.RELATIVE\_TO\_SELF,0.5f);

scaleAnimation.setDuration(1000);

manimationSet.addAnimation(scaleAnimation);

manimationSet.setFillAfter(true); //让其保持动画结束时的状态。

view.startAnimation(manimationSet);

ScaleAnimation scaleAnimation = new ScaleAnimation(1,2f,1,2f,

Animation.RELATIVE\_TO\_SELF,0.5f,

Animation.RELATIVE\_TO\_SELF,0.5f);

scaleAnimation.setDuration(1000);

animationSet.addAnimation(scaleAnimation);

animationSet.setFillAfter(true);

view.startAnimation(animationSet);

manimationSet = animationSet;

\}else\{

if(null!=manimationSet)manimationSet.setFillAfter(false);

\};

class ImageAdapter extends BaseAdapter\{

private Context ct;

private int\[\] data;

public ImageAdapter(Context ct,int\[\] data)\{

this.ct=ct;

this.data=data;

@Override

public int getCount() \{

return data.length;

@Override

public Object getItem(int position) \{

return data\[position\];

@Override

public long getItemId(int position) \{

return position;

@Override

public View getView(int position, View convertView, ViewGroup parent) \{

View view = null;

if(convertView==null)\{

ImageView img = new ImageView(ct);

img.setImageResource(data\[position\]);

view=img;

\}else\{

view=convertView;

return view;

android:orientation="vertical"

android:layout\_width="fill\_parent"

android:layout\_height="fill\_parent"

android:layout\_width="fill\_parent"

android:layout\_height="wrap\_content"

android:text="@string/hello"

android:id="@+id/gy\_main"

android:layout\_width="fill\_parent"

android:layout\_height="fill\_parent"

android:layout\_gravity="center\_horizontal"

android:spacing="10dip"

android:layout\_centerHorizontal="true"

android gallery 图片大小,android-gallery游览图片点击图片放大

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