//創(chuàng)建RequestQueue對(duì)象
RequestQueue requestQueue = Volley.newRequestQueue(this);
String url="http://api.m.panda.tv/ajax_get_all_subcate?__version=1.0.1.1300&__plat=android";
//創(chuàng)建request對(duì)象
StringRequest request=new StringRequest(url, new Response.Listener<String>() {
/**
* 請(qǐng)求成功的結(jié)果
* @param response 這個(gè)參數(shù)就是訪問(wèn)網(wǎng)絡(luò)數(shù)據(jù)的結(jié)果
*/
@Override
public void onResponse(String response) {
// 
}
}, new Response.ErrorListener() {
/**
* 這個(gè)方法用來(lái)監(jiān)聽訪問(wèn)錯(cuò)誤，展示的結(jié)果
* 07-19 04:17:13.414: E/tag(1181): -------------
* com.android.volley.VolleyError: 
* java.lang.SecurityException: 
* Permission denied (missing INTERNET permission?)==========================
*/
@Override
public void onErrorResponse(VolleyError error) {
Log.e("tag","-------------"+ error+"==========================");
}
});
//將Request對(duì)象添加到RequestQueue里面。
requestQueue.add(request);

//創(chuàng)建RequestQueue對(duì)象 
RequestQueue requestQueue = Volley.newRequestQueue(this); 
String url=”http://api.m.panda.tv/ajax_get_all_subcate”; 
StringRequest request=new StringRequest(Request.Method.POST, url, new Response.Listener() {
@Override
public void onResponse(String response) {
Log.e("tag", "請(qǐng)求成功============"+response);
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e("tag", "請(qǐng)求成功============"+error);
}
}){
/**
* 重寫getParams方法設(shè)置參數(shù)，post添加參數(shù)的方法
*/
@Override
protected Map<String, String> getParams() throws AuthFailureError {
HashMap<String, String> params = new HashMap<String,String>();
params.put("__version", "1.0.1.1300");
params.put("__plat", "android");
return params;
}
};
requestQueue.add(request);

RequestQueue requestQueue = Volley.newRequestQueue(context);
String img = datas.getImg();
//第三第四個(gè)參數(shù)分別用于指定允許圖片最大的寬度和高度，如果指定的網(wǎng)絡(luò)圖片的寬度或高度大于這里的最大值，則會(huì)對(duì)圖片進(jìn)行壓縮，指定成0的話就表示不管圖片有多大，都不會(huì)進(jìn)行壓縮。
//第五個(gè)參數(shù)用于指定圖片的顏色屬性
ImageRequest request=new ImageRequest(img, new Response.Listener<Bitmap>() {
@Override
public void onResponse(Bitmap response) {
holder.iv.setImageBitmap(response);
}
}, 0, 0,Bitmap.Config.ARGB_8888, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
// TODO Auto-generated method stub
}
});
requestQueue.add(request);

//繼承ImageCache，使用LruCache實(shí)現(xiàn)緩存
public class BitmapCache implements ImageLoader.ImageCache {
private LruCache<String, Bitmap> mCache;
public BitmapCache() {
int maxSize = 10 * 1024 * 1024;
mCache = new LruCache<String, Bitmap>(maxSize) {
@Override
protected int sizeOf(String key, Bitmap bitmap) {
return bitmap.getRowBytes() * bitmap.getHeight();
}
};
}
@Override
public Bitmap getBitmap(String url) {
return mCache.get(url);
}
@Override
public void putBitmap(String url, Bitmap bitmap) {
mCache.put(url, bitmap);
}
}
private void getImageByImageLoader() {
ImageView iv= (ImageView) findViewById(R.id.iv);
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
String url = "https://www.baidu.com/img/bdlogo.png";
ImageLoader loader=new ImageLoader(queue,new BitmapCache() );
// 第一個(gè)參數(shù)指定用于顯示圖片的ImageView控件
// 第二個(gè)參數(shù)指定加載圖片的過(guò)程中顯示的圖片
// 第三個(gè)參數(shù)指定加載圖片失敗的情況下顯示的圖片
ImageLoader.ImageListener listener=ImageLoader.getImageListener(iv,R.mipmap.ic_launcher,R.mipmap.ic_launcher);
// 調(diào)用ImageLoader的get()方法來(lái)加載圖片
// 第一個(gè)參數(shù)就是圖片的URL地址
// 第二個(gè)參數(shù)則是剛剛獲取到的ImageListener對(duì)象
// 如果想對(duì)圖片的大小進(jìn)行限制，也可以使用get()方法的重載，指定圖片允許的最大寬度和高度，即通過(guò)第三第四個(gè)參數(shù)指定
loader.get(url,listener);
}

<com.android.volley.toolbox.NetworkImageView
android:id="@+id/network_image_view"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true"
/>

public void networkImageView(){
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
ImageLoader loader=new ImageLoader(queue,new BitmapCache() );
NetworkImageView niv= (NetworkImageView) findViewById(R.id.network_image_view);
niv.setDefaultImageResId(R.mipmap.ic_launcher);//設(shè)置加載中顯示的圖片
niv.setErrorImageResId(R.mipmap.ic_launcher);//設(shè)置加載失敗時(shí)顯示的圖片
niv.setImageUrl("https://www.baidu.com/img/bdlogo.png", loader);//設(shè)置目標(biāo)圖片的URL地址
}

{“name”:”lizhangqu”,”age”:16}

package cn.edu.zafu.http;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.toolbox.HttpHeaderParser;
import com.google.gson.Gson;
import java.io.UnsupportedEncodingException;
/**
* Created by lizhangqu on 2015/5/7.
*/
public class GsonRequest<T> extends Request<T> {
private final Response.Listener<T> mListener;
private Gson mGson;
private Class<T> mClass;
public GsonRequest(int method, String url, Class<T> clazz, Response.Listener<T> listener,
Response.ErrorListener errorListener) {
super(method, url, errorListener);
mGson = new Gson();
mClass = clazz;
mListener = listener;
}
public GsonRequest(String url, Class<T> clazz, Response.Listener<T> listener,
Response.ErrorListener errorListener) {
this(Method.GET, url, clazz, listener, errorListener);
}
@Override
protected Response<T> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(mGson.fromJson(jsonString, mClass),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
}
}
@Override
protected void deliverResponse(T response) {
mListener.onResponse(response);
}
}

package cn.edu.zafu.http;
/**
* Created by lizhangqu on 2015/5/7.
*/
public class Person {
private String name;
private int age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public int getAge() {
return age;
}
public void setAge(int age) {
this.age = age;
}
@Override
public String toString() {
return "Person{" +
"name='" + name + '\'' +
", age=" + age +
'}';
}
}

private void json(){
RequestQueue queue = Volley.newRequestQueue(getApplicationContext());
String url = "http://121.41.119.107/test/index.php";
GsonRequest<Person> request=new GsonRequest<Person>(url, Person.class, new Response.Listener<Person>() {
@Override
public void onResponse(Person response) {
Log.d("TAG",response.toString());
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
}
});
queue.add(request);
}