如何放大选定的图像在Android图库 [英] How to zoom selected image in gallery in android

问题描述

我在我的应用程序中的画廊。该库我有很多的图像。
谁能告诉我如何放大在Android上的画廊选择的图像？请出示样品code。

I have a gallery in my application. In that gallery I have a lot of images. Can anybody tell me how to zoom in on a selected image in the gallery in android? Please show sample code.

我试着用这个code，但它不工作：

I tried with this code but it's not working:

 gallery.setOnItemClickListener(new OnItemClickListener() 
 {
     public void onItemClick(AdapterView parent, 
                    View v, int position, long id) 
     {

            if(v!=null)
                {
                if(position>0){
                View previousView=parent.findViewById(position-1);
                if(previousView!=null)
                {
                previousView.setLayoutParams(new Gallery.LayoutParams(100, 120)); 
                }
                }
                Toast.makeText(getBaseContext(), 
                        "pic" + (position + 1) + " selected", 
                        Toast.LENGTH_SHORT).show();
                Animation grow = AnimationUtils.loadAnimation(GalleryActivity.this, R.anim.grow);      
                    v.startAnimation(grow);      
                v.setLayoutParams(new Gallery.LayoutParams(170, 150)); 
                }

感谢

推荐答案

这code ++工程

 gl.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener()
      { public void onItemSelected(AdapterView<?> parent, View v, int
      position, long id) {

      if (lastview != null) lastview .setLayoutParams(new
      Gallery.LayoutParams(140, 280)); lastview = v; v.setLayoutParams(new
      Gallery.LayoutParams(170, 340)); }

      public void onNothingSelected(AdapterView<?> parent) { //
      System.out.println("NOTHING SELECTED");

      } });

这篇关于如何放大选定的图像在Android图库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！