关于voller框架的json image netimage

JsonObjectRequest

package com.wl.volleytest.activity;

import org.json.JSONObject;

import com.android.volley.Request;
import com.android.volley.Request.Method;
import com.android.volley.RequestQueue;
import com.android.volley.Response;
import com.android.volley.Response.Listener;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.JsonObjectRequest;
import com.android.volley.toolbox.Volley;
import com.wl.volleytest.R;

import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.TextView;

public class bt_json extends BaseActivity {
String uri = "http://op.juhe.cn/onebox/news/words";
String key = "c72da834ccb8e4bda33a875763541783";
String TAG = "bt_json";
RequestQueue queue;

public bt_json() {
super(R.layout.bt_json);
// TODO Auto-generated constructor stub
}

@Override
protected void initData() {
// TODO Auto-generated method stub
}

@Override
protected void initView() {
uri = uri + "?key=" + key;
}

@Override
protected void bindView() {
findViewById(R.id.json).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
queue = Volley.newRequestQueue(c);
queue.add(new JsonObjectRequest(Method.GET, uri, null, new Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
TextView tv = (TextView) findViewById(R.id.text);
tv.setText("response : " + response.toString());
}

}, new Response.ErrorListener() {

@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
Log.i(TAG, error.getMessage());
}
}));
queue.start();
}
});

}

@Override
protected void onStop() {
// for (JsonObjectRequest req : queue) {
// req.cancel();
// }
super.onStop();
queue.cancelAll(c);
}

@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
}

queue = Volley.newRequestQueue(c);
queue.add(new JsonObjectRequest(Method.GET, uri, null, new Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
TextView tv = (TextView) findViewById(R.id.text);
tv.setText("response : " + response.toString());
}

}, new Response.ErrorListener() {

@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
Log.i(TAG, error.getMessage());
}
}));
queue.start();
}
});

@Override
protected void onStop() {

// for (JsonObjectRequest req : queue) {

// req.cancel();

// }
super.onStop();
queue.cancelAll(c);
}

@Override
protected void onDestroy() {
// TODO Auto-generated method stub
super.onDestroy();
}
}

/////////////////////////////////////////////////

ImageLoader

package com.wl.volleytest.activity;

import java.io.File;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.DiskBasedCache;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.ImageLoader.ImageCache;
import com.android.volley.toolbox.ImageLoader.ImageListener;
import com.android.volley.toolbox.Volley;
import com.wl.volleytest.R;

import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.support.v4.util.LruCache;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;

public class bt_image extends BaseActivity {
String url = "http://p3.so.qhimg.com/t01fb47fac77d3f72b3.jpg";
ImageView imageView;

public bt_image() {
super(R.layout.bt_image);
// TODO Auto-generated constructor stub
}

@Override
protected void initData() {

}

@Override
protected void initView() {
// TODO Auto-generated method stub

}

@Override
protected void bindView() {
imageView = (ImageView) setView(R.id.image);
findViewById(R.id.json).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
RequestQueue mRequestQueue = Volley.newRequestQueue(c);

ImageLoader mImageLoader = new ImageLoader(mRequestQueue, new BitmapCache());
// imageView是一个ImageView实例
// ImageLoader.getImageListener的第二个参数是默认的图片resource id
// 第三个参数是请求失败时候的资源id，可以指定为0
ImageListener listener = ImageLoader
.getImageListener(imageView, android.R.drawable.ic_menu_rotate,
android.R.drawable.ic_delete);
mImageLoader.get(url, listener);
//
}
});

}
public class BitmapCache implements ImageCache {
private LruCache<String, Bitmap> cache;
public BitmapCache() {
cache = new LruCache<String, Bitmap>(8 * 1024 * 1024) {
@Override
protected int sizeOf(String key, Bitmap bitmap) {
return bitmap.getRowBytes() * bitmap.getHeight();
}
};
}
@Override
public Bitmap getBitmap(String url) {
return cache.get(url);
}
@Override
public void putBitmap(String url, Bitmap bitmap) {
cache.put(url, bitmap);
}
}
}

 
       // imageView是一个ImageView实例  
       // ImageLoader.getImageListener的第二个参数是默认的图片resource id  
       // 第三个参数是请求失败时候的资源id，可以指定为0  
       ImageListener listener = ImageLoader  
               .getImageListener(imageView, android.R.drawable.ic_menu_rotate,  
                       android.R.drawable.ic_delete);  
       mImageLoader.get(url, listener);  
//

}
});

/////////////////////////////////////////////////////

NetworkImageView

package com.wl.volleytest.activity;

import com.android.volley.RequestQueue;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.NetworkImageView;
import com.android.volley.toolbox.Volley;
import com.android.volley.toolbox.ImageLoader.ImageCache;
4000
import com.android.volley.toolbox.ImageLoader.ImageListener;
import com.wl.volleytest.R;
import com.wl.volleytest.activity.bt_image.BitmapCache;

import android.graphics.Bitmap;
import android.support.v4.util.LruCache;
import android.view.View;
import android.view.View.OnClickListener;

public class bt_networkimageview extends BaseActivity {
NetworkImageView imageView;
String url = "http://a.hiphotos.baidu.com/image/pic/item/c995d143ad4bd113ab2e93db5eafa40f4afb0573.jpg";

public bt_networkimageview() {
super(R.layout.bt_networkimageview);
// TODO Auto-generated constructor stub
}

@Override
protected void initData() {
imageView=(NetworkImageView) findViewById(R.id.netimage);

}

@Override
protected void initView() {
// TODO Auto-generated method stub

}

@Override
protected void bindView() {
findViewById(R.id.json).setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {
RequestQueue mRequestQueue = Volley.newRequestQueue(c);
// /////////////////
ImageLoader mImageLoader = new ImageLoader(mRequestQueue, new BitmapCache());

imageView.setDefaultImageResId(android.R.drawable.ic_menu_rotate);
imageView.setErrorImageResId(android.R.drawable.ic_delete);
imageView.setImageUrl(url, mImageLoader);
// ///////////////////////////////
// ImageListener listener = ImageLoader.getImageListener(imageView, android.R.drawable.ic_menu_rotate,
// android.R.drawable.ic_delete);
// mImageLoader.get(url, listener);
}
});

}

public class BitmapCache implements ImageCache { private LruCache<String, Bitmap> cache; public BitmapCache() { cache = new LruCache<String, Bitmap>(8 * 1024 * 1024) { @Override protected int sizeOf(String key, Bitmap bitmap) { return bitmap.getRowBytes() * bitmap.getHeight(); } }; } @Override public Bitmap getBitmap(String url) { return cache.get(url); } @Override public void putBitmap(String url, Bitmap bitmap) { cache.put(url, bitmap); } }
}


RequestQueue mRequestQueue = Volley.newRequestQueue(c);

// /////////////////
ImageLoader mImageLoader = new ImageLoader(mRequestQueue, new BitmapCache());

imageView.setDefaultImageResId(android.R.drawable.ic_menu_rotate);// 与imageloader的区别
imageView.setErrorImageResId(android.R.drawable.ic_delete);

imageView.setImageUrl(url, mImageLoader);
}
});

}

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public class BitmapCache implements ImageCache {
private LruCache<String, Bitmap> cache;

public BitmapCache() {
cache = new LruCache<String, Bitmap>(8 * 1024 * 1024) {
@Override
protected int sizeOf(String key, Bitmap bitmap) {
return bitmap.getRowBytes() * bitmap.getHeight();
}
};
}

@Override
public Bitmap getBitmap(String url) {
return cache.get(url);
}

@Override
public void putBitmap(String url, Bitmap bitmap) {
cache.put(url, bitmap);
}
}