Question

我遇到从网址到网格视图的加载图片的问题

从imageview加载图片网址已经成功但是，从gridview加载图像网址不起作用

HalamanUtama.Java

import android.content.Intent;

import android.graphics.Bitmap;

import android.os.Bundle;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.AdapterView.OnItemClickListener;

import android.widget.AdapterView;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.TextView;



/**

 * A simple {@link android.support.v4.app.Fragment} subclass.

 * 

 */

public class HalamanUtama extends android.app.Fragment {



 public HalamanUtama() {

  // Required empty public constructor

 }



 @Override

 public View onCreateView(LayoutInflater inflater, ViewGroup container,

   Bundle savedInstanceState) {

  // Inflate the layout for this fragment



        View view=inflater.inflate(R.layout.fragment_halaman_utama, container,

    false);



        try{

         int loader = R.drawable.loader;

        ImageView image = (ImageView) view.findViewById(R.id.banner);

        String image_url = "https://www.google.com/images/srpr/logo11w.png";

        ImageLoader imgLoader = new ImageLoader(getActivity().getApplicationContext());

        imgLoader.DisplayImage(image_url, loader, image);



        } catch (Exception e){}



        GridView gridView = (GridView) view.findViewById(R.id.grid_view1);

        gridView.setAdapter(new ImageAdapter(getActivity().getApplicationContext()));



        gridView.setOnItemClickListener(new OnItemClickListener() {

         @Override

         public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,

           long arg3) {

          // TODO Auto-generated method stub

          // Sending image id to FullScreenActivity

                Intent i = new Intent(getActivity().getApplicationContext(), FullImage.class);

                // passing array index

                i.putExtra("id", arg2);

                startActivity(i);

         }

  });



        return view;

 }



}

ImageAdapter.Java

import java.io.InputStream;

import java.net.URL;



import android.R.drawable;

import android.app.Activity;

import android.content.Context;

import android.graphics.drawable.Drawable;

import android.util.Log;

import android.view.LayoutInflater;

import android.view.View;

import android.view.ViewGroup;

import android.widget.BaseAdapter;

import android.widget.GridView;

import android.widget.ImageView;

import android.widget.TextView;



public class ImageAdapter extends BaseAdapter {

 private Context mContext;

 private LayoutInflater mLayoutInflater;



 // Keep all Images in array

    public Integer[] mThumbIds = {

            R.drawable.pic1, R.drawable.pic2,

            R.drawable.pic3, R.drawable.pic4,

            R.drawable.pic5, R.drawable.pic6,

            R.drawable.pic7

    };



    public String[] titleProduct={

      "satu", "dua", "tiga",

      "empat","lima","enam",

      "tujuh"

    };



 // Constructor

    public ImageAdapter(Context c){

        mContext = c;

     mLayoutInflater=LayoutInflater.from(c);

    }



    @Override

    public int getCount() {

        return mThumbIds.length;

    }



    @Override

    public Object getItem(int position) {

        return mThumbIds[position];

    }



    @Override

    public long getItemId(int position) {

        return 0;

    }



    @Override

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

       /*ImageView imageView = new ImageView(mContext);

         imageView.setImageResource(mThumbIds[position]);

         imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);

         imageView.setLayoutParams(new GridView.LayoutParams(150, 150));*/

       //return imageView;



     ViewHolder mVHolder;



     if(convertView==null){

      convertView=mLayoutInflater.inflate(R.layout.custom_grid, parent, false);

      mVHolder=new ViewHolder();

      mVHolder.mImageView=(ImageView)convertView.findViewById(R.id.imageProduct);

            mVHolder.mTextView=(TextView)convertView.findViewById(R.id.titleProduct);

            mVHolder.mImageView.setScaleType(ImageView.ScaleType.CENTER_CROP);

            mVHolder.mImageView.setPadding(8,8,8,8);

            convertView.setTag(mVHolder);

     } else{

      mVHolder=(ViewHolder) convertView.getTag();

     }



     try{

     ImageLoader imgLoader=new ImageLoader(mContext);

     imgLoader.DisplayImage("https://www.google.com/images/srpr/logo11w.png", R.drawable.loader, mVHolder.mImageView);



        mVHolder.mTextView.setText(titleProduct[position]);

     } catch (Exception e){}

        return convertView;

    }



    static class ViewHolder{

     ImageView mImageView;

     TextView mTextView;

    }





}

logcat的

 07-07 12:05:41.419: D/AbsListView(26215): Get MotionRecognitionManager
    07-07 12:05:41.449: D/AbsListView(26215): Get MotionRecognitionManager
    07-07 12:05:41.479: D/dalvikvm(26215): GC_FOR_ALLOC freed 166K, 10% free 9404K/10375K, paused 23ms, total 24ms
    07-07 12:05:41.539: W/ResourceType(26215): Failure getting entry for 0x010802c9 (t=7 e=713) in package 0 (error -75)
    07-07 12:05:41.559: W/ResourceType(26215): Failure getting entry for 0x010802c9 (t=7 e=713) in package 0 (error -75)
    07-07 12:05:41.669: D/libEGL(26215): loaded /system/lib/egl/libEGL_mali.so
    07-07 12:05:41.690: D/libEGL(26215): loaded /system/lib/egl/libGLESv1_CM_mali.so
    07-07 12:05:41.690: D/libEGL(26215): loaded /system/lib/egl/libGLESv2_mali.so
    07-07 12:05:41.720: D/OpenGLRenderer(26215): Enabling debug mode 0
    07-07 12:05:41.770: D/dalvikvm(26215): GC_CONCURRENT freed 126K, 10% free 9710K/10695K, paused 13ms+3ms, total 32ms
    07-07 12:06:00.620: W/IInputConnectionWrapper(26215): getSelectedText on inactive InputConnection
    07-07 12:06:00.620: W/IInputConnectionWrapper(26215): setComposingText on inactive InputConnection

请帮帮我......

Answer 1

如果您使用通用图像加载程序显示图像，请检查您是否正确完成了以下步骤。如果没有，下面的步骤也将提供您使用它的基本教程：

- 创建一个扩展应用程序的类，并将下面的代码放入其中。在这种情况下，我将我的类命名为UILApp：

package com.example.myproject;

import com.nostra13.universalimageloader.core.ImageLoader;
import com.nostra13.universalimageloader.core.ImageLoaderConfiguration;
import android.app.Application;

public class UILApp extends Application{

@Override
public void onCreate() {
    super.onCreate();

    ImageLoaderConfiguration configuration = new ImageLoaderConfiguration.Builder(getApplicationContext()).build();

    ImageLoader.getInstance().init(configuration);

}

}

- 第二，在AndroidManifest.xml文件中，将应用程序标记中的name值设置为此类。示例：

<application
    android:name="com.example.myproject.UILApp"
    android:allowBackup="true"
    android:icon="@drawable/app_icon"
    android:label="@string/app_name"
    android:theme="@style/AppTheme" >

-Third，像这样创建你的ImageLoader对象：

DisplayImageOptions options = new DisplayImageOptions.Builder()
        .cacheOnDisk(true)
        .build();

ImageLoader loader = ImageLoader.getInstance();

在上面的代码中，我将缓存放在磁盘上。 DisplayImageOptions还有许多其他可以检出和设置的设置。我已经将我的loader对象创建为类变量，因此我可以在类中的任何位置使用它。有关更多信息，请访问GitHub上的Universal Image Loader页面：https://github.com/nostra13/Android-Universal-Image-Loader

希望这有帮助！

将图像从URL加载到gridview中

1 个答案: