从ViewPager设置壁纸 [英] Set wallpaper from ViewPager
本文介绍了从ViewPager设置壁纸的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我有一个ViewPager中，我改变图像与Swype的。现在，我想打的按钮，用户看到的墙纸，这将设置当前图像。如何实现使用onPageSelected或类似的东西，将做的工作？
code：
包com.example.app;进口java.io.IOException异常;
进口android.app.Activity;
进口android.app.WallpaperManager;
进口android.content.Context;
进口android.os.Bundle;
进口android.support.v4.view.PagerAdapter;
进口android.support.v4.view.ViewPager;
进口android.support.v4.view.ViewPager.OnPageChangeListener;
进口android.view.View;
进口android.view.ViewGroup;
进口android.view.Window;
进口android.view.animation.AnimationUtils;
进口android.widget.AdapterView;
进口android.widget.BaseAdapter;
进口android.widget.Button;
进口android.widget.ImageSwitcher;
进口android.widget.ImageView;
进口android.widget.Toast;
进口android.widget.ViewSwitcher;
进口android.view.View.OnClickListener;
进口android.widget.ViewSwitcher.ViewFactory;公共类MainActivity延伸活动{
@覆盖
公共无效的onCreate（捆绑savedInstanceState）{
super.onCreate（savedInstanceState）;
requestWindowFeature（Window.FEATURE_NO_TITLE）;
的setContentView（R.layout.activity_main）;
ViewPager viewPager =（ViewPager）findViewById（R.id.view_pager）;
ImagePagerAdapter适配器=新ImagePagerAdapter（）;
viewPager.setAdapter（适配器）; } 私有类ImagePagerAdapter扩展PagerAdapter {
私人诠释[] = mImages新INT [] {
R.drawable.image1，
R.drawable.image2，
R.drawable.image3，
R.drawable.image4 };
@覆盖
公众诠释的getCount（）{
返回mImages.length;
} @覆盖
公共布尔isViewFromObject（查看视图，Object对象）{
返回查看==（（ImageView的）对象）;
} @覆盖
公共对象instantiateItem（ViewGroup中的容器，最终诠释位置）{
上下文的背景下= MainActivity.this;
ImageView的ImageView的=新ImageView的（上下文）;
INT填充= context.getResources（）。getDimensionPixelSize（
R.dimen.padding_medium）;
imageView.setPadding（填充，填充，填充，填充）;
imageView.setScaleType（ImageView.ScaleType.CENTER_INSIDE）;
imageView.setImageResource（mImages [位置]）;
（（ViewPager）容器）.addView（ImageView的，0）;
返回ImageView的;
}
@覆盖
公共无效destroyItem（ViewGroup中的容器，最终诠释位置，Object对象）{
（（ViewPager）容器）.removeView（（ImageView的）对象）;
}
}
}
}
按钮code我以前用过，但不知道现在该怎么实现它在ViewPager：
按钮按钮=（按钮）this.findViewById（R.id.button1）;
button.setOnClickListener（新OnClickListener（）{
公共无效的onClick（视图v）{
WallpaperManager myWallpaperManager = WallpaperManager.getInstance（getApplicationContext（））;
尝试{
myWallpaperManager.setResource（mImages [位置]）;
Toast.makeText（MainActivity.this，墙纸OK！，Toast.LENGTH_SHORT）.show（）;
}赶上（IOException异常五）{
Toast.makeText（MainActivity.this，墙纸错误！，Toast.LENGTH_SHORT）.show（）;
}
}
}）;
解决方案
您可以使用像
viewPager.setOnPageChangeListener（新OnPageChangeListener（）{ @覆盖
公共无效使用onPageSelected（INT为arg0）{
// TODO自动生成方法存根
//在这里你可以设置壁纸
curruntPosition =为arg0; } @覆盖
公共无效onPageScrolled（INT为arg0，ARG1浮球，诠释ARG2）{
// TODO自动生成方法存根 } @覆盖
公共无效onPageScrollStateChanged（INT为arg0）{
// TODO自动生成方法存根 }
}）;
然后
按钮按钮=（按钮）this.findViewById（R.id.button1）;
button.setOnClickListener（新OnClickListener（）{
公共无效的onClick（视图v）{
WallpaperManager myWallpaperManager = WallpaperManager.getInstance（getApplicationContext（））;
尝试{
myWallpaperManager.setResource（mImages [curruntPosition]）;
Toast.makeText（MainActivity.this，墙纸OK！，Toast.LENGTH_SHORT）.show（）;
}赶上（IOException异常五）{
Toast.makeText（MainActivity.this，墙纸错误！，Toast.LENGTH_SHORT）.show（）;
}
}
}）;
和别忘了声明一个全局变量
INT curruntPosition = 0;
I have a ViewPager in which I change images with swype. Now I want to make button which will set current image that user is seeing as wallpaper. How to implement onPageSelected or something similar that will do the job?
Code:
package com.example.app;
import java.io.IOException;
import android.app.Activity;
import android.app.WallpaperManager;
import android.content.Context;
import android.os.Bundle;
import android.support.v4.view.PagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v4.view.ViewPager.OnPageChangeListener;
import android.view.View;
import android.view.ViewGroup;
import android.view.Window;
import android.view.animation.AnimationUtils;
import android.widget.AdapterView;
import android.widget.BaseAdapter;
import android.widget.Button;
import android.widget.ImageSwitcher;
import android.widget.ImageView;
import android.widget.Toast;
import android.widget.ViewSwitcher;
import android.view.View.OnClickListener;
import android.widget.ViewSwitcher.ViewFactory;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.activity_main);
ViewPager viewPager = (ViewPager) findViewById(R.id.view_pager);
ImagePagerAdapter adapter = new ImagePagerAdapter();
viewPager.setAdapter(adapter);
}
private class ImagePagerAdapter extends PagerAdapter {
private int[] mImages = new int[] {
R.drawable.image1,
R.drawable.image2,
R.drawable.image3,
R.drawable.image4
};
@Override
public int getCount() {
return mImages.length;
}
@Override
public boolean isViewFromObject(View view, Object object) {
return view == ((ImageView) object);
}
@Override
public Object instantiateItem(ViewGroup container, final int position) {
Context context = MainActivity.this;
ImageView imageView = new ImageView(context);
int padding = context.getResources().getDimensionPixelSize(
R.dimen.padding_medium);
imageView.setPadding(padding, padding, padding, padding);
imageView.setScaleType(ImageView.ScaleType.CENTER_INSIDE);
imageView.setImageResource(mImages[position]);
((ViewPager) container).addView(imageView, 0);
return imageView;
}
@Override
public void destroyItem(ViewGroup container, final int position, Object object) {
((ViewPager) container).removeView((ImageView) object);
}
}
}
}
Button code i used before, but don't know how to implement it now in ViewPager:
Button button = (Button) this.findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
WallpaperManager myWallpaperManager = WallpaperManager.getInstance(getApplicationContext());
try {
myWallpaperManager.setResource(mImages[position]);
Toast.makeText(MainActivity.this, "Wallpaper ok!", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(MainActivity.this, "Wallpaper error!", Toast.LENGTH_SHORT).show();
}
}
});
解决方案
you can use like
viewPager.setOnPageChangeListener(new OnPageChangeListener() {
@Override
public void onPageSelected(int arg0) {
// TODO Auto-generated method stub
//Here you can set the wallpaper
curruntPosition=arg0;
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
// TODO Auto-generated method stub
}
@Override
public void onPageScrollStateChanged(int arg0) {
// TODO Auto-generated method stub
}
});
and then
Button button = (Button) this.findViewById(R.id.button1);
button.setOnClickListener(new OnClickListener() {
public void onClick(View v) {
WallpaperManager myWallpaperManager = WallpaperManager.getInstance(getApplicationContext());
try {
myWallpaperManager.setResource(mImages[curruntPosition]);
Toast.makeText(MainActivity.this, "Wallpaper ok!", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(MainActivity.this, "Wallpaper error!", Toast.LENGTH_SHORT).show();
}
}
});
and do not forget the declare a global variable
int curruntPosition=0;
这篇关于从ViewPager设置壁纸的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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