Java 对于循环打印三次，或者可能是其他的

我试图在下面的链接中更改这个答案

将特定文件夹中的图像显示到gridview布局。我肯定是我弄坏了…查看代码和日志

 package nsixty.crew.app;

import java.io.File;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Environment;
import android.util.Log;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;
import android.widget.Toast;

public class ImageAdapter45 extends BaseAdapter {

    private Context mContext;


    public ImageAdapter45(Context c) {
        mContext = c;
    }

    public int getCount() {
        return mThumbIds();
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    // create a new ImageView for each item referenced by the Adapter
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) { // if it's not recycled, initialize some
                                    // attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(85, 85));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
        } else {
            imageView = (ImageView) convertView;
        }

//      File path = new File(Environment.getExternalStorageDirectory(),"/Crews/Images/");
//      String paths = null;
//       
//      if(path.exists())
//      {
//          
//      
//      
//      
//      String[] fileNames  = path.list();

        //Log.d("I be mumu", data);

        ///after you use your images
//      System.gc();
        //Bitmap mBitmap = null;
        //for(int i = 0; i < fileNames.length; i++)
        //{
//          Boolean finish = true;
//          
                //paths = (path.getPath() + "/" + fileNames[i]);
//              BitmapFactory.Options opts=new BitmapFactory.Options();
//              opts.inDither=false;                     //Disable Dithering mode
//              opts.inPurgeable=true;        
//              opts.inPurgeable=true;                   //Tell to gc that whether it needs free memory, the Bitmap can be cleared
//              opts.inInputShareable=true;              //Which kind of reference will be used to recover the Bitmap data after being clear, when it will be used in the future
//              opts.inTempStorage=new byte[32 * 1024];

                    //System.gc();

        File path = new File(Environment.getExternalStorageDirectory(),
                "/Crews/Images/");
        String paths = null;
        // String[] fileNames = null ;

        StringBuilder sb = new StringBuilder();

        if (path.exists()) {
            //ArrayList<String> urls = new ArrayList<String>();
            String[] fileNames = path.list();
            //List<String> urls =(Arrays.asList(fileNames));

//          for (int i = 0; i < fileNames.length; i++) {
////                sb.append((path.getPath() + "/" + fileNames[i]) + "\n");
//              paths = ((path.getPath() + "/" + fileNames[i]));
//              urls.add(paths);
//              
//              //Log.v("YELLLO12",urls.toArray().toString());
//               
//              
//              
//          }
//          urls.add(paths);

//          String paths3 = "";
//
//          for (String s : urls)
//          {
//               paths3 += s + "\n";
//               
//              // imageView.setImageBitmap(BitmapFactory.decodeFile((path.getPath() + "/" + paths3)));
//          }
            imageView.setImageBitmap(BitmapFactory.decodeFile((path.getPath() + "/" +fileNames[position])));
            System.gc();
            Log.v("YELLLO1237P",fileNames[position]);

            //imageView.setImageBitmap(BitmapFactory.decodeFile("/mnt/sdcard/Crews/Images/IMG_06_11_2012_01_16_05.jpg"));
            //Log.v("YELLLO300",path.getPath() + "/" +paths3);

            //Bitmap mBitmap = BitmapFactory.decodeFile(paths3);
            //imageView.setImageBitmap(mBitmap);
            //Log.v("YELLLO123",paths);
            //Log.v("YELLLO124ggh",fileNames.toString());


        }
        //path.close();


                // }

            //fos.close();








        return imageView;
    }
    //static String data = ImageAdapter45.data3();


    //static String[] mThumbIds = {data};
//  public static String Pathss(){
//      File path = new File(Environment.getExternalStorageDirectory(),"/Crews/Images/");
//      String paths = null;
//      String[] fileNames = null ;
//      
//      StringBuilder sb = new StringBuilder();
//      if(path.exists())
//      {
//          fileNames = path.list();
//          
//          for(int i = 0; i < fileNames.length; i++)
//          {
//              sb.append((path.getPath()+"/"+ fileNames[i]));
//              paths = sb.toString();
//          }
//          
//      }
//      return paths.trim();
//  }

    public Integer mThumbIds() {
        File path = new File(Environment.getExternalStorageDirectory(),"/Crews/Images/");
        //String paths = null;
        String[] fileNames = null ;
        if(path.exists())
        {
            fileNames = path.list();


        }





        return fileNames.length;

        //Log.d("I be mumu", data);

//      StringBuilder sb = new StringBuilder();
//      for(int i = 0; i < fileNames.length; i++)
//      {
//          //Boolean finish = true;
//          //if (finish == true){
//              String  paths = (path.getPath() + "/" + fileNames[i]);
//              sb.append
//              //Log.d("o men see fuckup", paths);
//              
//              // }
//          //fos.close();
//          
//      
//      }
//      




    }


    // references to our images

}

---

提前感谢。

可能是因为您正在使用

File path = new File(Environment.getExternalStorageDirectory(),
                "/Crews/Images/");

在getview内部。。。Getview将运行listview中的项目数量，每当您滚动它时，Getview将再次加载。它就像一个循环。尝试在它之外做图像工作。试试看。

（将评论转换为答案）

我想主要的问题（除了

OutOfMemory

错误）是不正确的

getView

，它对位置没有依赖性。将

路径3

替换为

文件名[位置]

修复了此问题

---

请注意，您还可以在ImageAdapter45构造函数中检索一次

文件名

，并在

mThumbIds（）

和

getView（）

中使用它。我看不到getView内部对position参数的依赖性，所以我想总是得到相同的图像是合乎逻辑的。您好，谢谢回复。请给出一个在getView中添加依赖项的示例，使用（在getView中）文件名[position]代替paths3是否足够？它在我的模拟器上工作，但在手机上显示内存不足错误位图大小超出Vm预算。。我将添加System.gc。。看看它是否能正常工作还是一样。。。模拟器只有两张图片，这可能就是它工作的原因。。但是fone有10张照片。。我正在更新代码，这样你就可以看到它现在的样子了。嗨，谢谢你的回复。你知道我如何规避它吗。请给我举个例子。。。我要申请。。

File path = new File(Environment.getExternalStorageDirectory(),
                "/Crews/Images/");