xUtils3

所需权限:
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
注解模块
Activity的注解
1.在Application的oncreate方法中加入下面代码:
x.Ext.init(this);
2.在Activity的oncreate方法中加入下面代码:
x.view().inject(this);
3.加载当前的Activity布局需要如下注解:
@ContentView加入到Activity的上方
4.给View进行初始化需要如下注解:
@InjectView
5.处理控件的各种响应事件需要如下注解:
@Envent
示例如下:
@ContentView(R.layout.activity_main)
public class MainActivity extends ActionBarActivity {

@ViewInject(R.id.btn_get)
Button btn_get;
@ViewInject(R.id.btn_post)
Button btn_post;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
x.view().inject(this);

btn_get.setText("发送get请求");
btn_post.setText("发送post请求");
}
//等同于@Event(value={R.id.btn_get,R.id.btn_post},type=View.OnClickListener.class)
@Event(value={R.id.btn_get,R.id.btn_post})
private void getEvent(View view){
switch(view.getId()){
case R.id.btn_get:
Toast.makeText(MainActivity.this, btn_get.getText().toString().trim(), 0).show();
break;
case R.id.btn_post:
Toast.makeText(MainActivity.this, btn_post.getText().toString().trim(), 0).show();
break;
}
}
通过测试，我们发现当点击btn_get按钮时，弹出了“发送get请求”的效果。到这里，大家算是对XUtils的注解有个一个基本的认识，下面我在强调一点的是，@Event这个注解默认情况下type属性为View.OnClickListener.class.如果你想实现其余点击事件效果，只需要把type值进行修改即可。
另外需要注意的一点是按钮的点击事件必须用private进行修饰。
Fragment的注解:
@ContentView(R.layout.fragment_first)
public class FirstFragment extends Fragment{
private MyAdapter adapter;
private List<Person> list=new ArrayList<>();
private List<String> listUrl=new ArrayList<>();
private List<String> listName=new ArrayList<>();

@ViewInject(R.id.btn_test)
Button btn_test;
@ViewInject(R.id.listView)
ListView listView;

@Override
public View onCreateView(LayoutInflater inflater,
@Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
return  x.view().inject(this, inflater, container);
}
ViewHolder的注解:
public class MyAdapter extends  BaseAdapter{
private Context context;
private List<Person> list;
private LayoutInflater mInflater;
private ImageOptions options;
public ViewHolder holder;
public MyAdapter(Context context, List<Person> list) {
this.context = context;
this.list = list;
this.mInflater=LayoutInflater.from(context);
options=new ImageOptions.Builder().setLoadingDrawableId(R.drawable.ic_launcher)
.setLoadingDrawableId(R.drawable.ic_launcher).setUseMemCache(true).setCircular(true).build();
}
@Override
public int getCount() {
return list.size();
}
@Override
public Object getItem(int position) {
return list.get(position);
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(int position, View convertView, ViewGroup parent) {
holder=null;
if(convertView==null){
convertView=mInflater.inflate(R.layout.itemone, null);
holder=new ViewHolder();
x.view().inject(holder,convertView);
convertView.setTag(holder);
}
else{
holder=(ViewHolder) convertView.getTag();
}
Person bean=list.get(position);
holder.tv_name.setText(bean.getName());
x.image().bind(holder.iv
fd0a
_image, bean.getImgUrl(), options);
return convertView;
}

class ViewHolder{
@ViewInject(R.id.tv_name)
private TextView tv_name;
@ViewInject(R.id.iv_image)
private ImageView iv_image;
}
上面的代码是注解ViewHolder的标准模式，相信大家完全能够看明白。这里我加载图片使用到了XUtils3的加载网络图片的方法。后面我会详细进行讲解。
网络模块
XUtils的网络请求方法和一些网络请求框架的用法非常类似，我进行了一些简单的封装。
封装一共有3个文件，分别是网络请求工具类XUtil,请求响应数据的解析类，还有一个就是一个请求成功的一个接口回调类。
代码如下:
public class XUtil {
/**
* 发送get请求
* @param <T>
*/
public static <T> Cancelable Get(String url,Map<String,String> map,CommonCallback<T> callback){
RequestParams params=new RequestParams(url);
if(null!=map){
for(Map.Entry<String, String> entry : map.entrySet()){
params.addQueryStringParameter(entry.getKey(), entry.getValue());
}
}
Cancelable cancelable = x.http().get(params, callback);
return cancelable;
}
/**
* 发送post请求
* @param <T>
*/
public static <T> Cancelable Post(String url,Map<String,Object> map,CommonCallback<T> callback){
RequestParams params=new RequestParams(url);
if(null!=map){
for(Map.Entry<String, Object> entry : map.entrySet()){
params.addParameter(entry.getKey(), entry.getValue());
}
}
Cancelable cancelable = x.http().post(params, callback);
return cancelable;
}
/**
* 上传文件
* @param <T>
*/
public static <T> Cancelable UpLoadFile(String url,Map<String,Object> map,CommonCallback<T> callback){
RequestParams params=new RequestParams(url);
if(null!=map){
for(Map.Entry<String, Object> entry : map.entrySet()){
params.addParameter(entry.getKey(), entry.getValue());
}
}
params.setMultipart(true);
Cancelable cancelable = x.http().get(params, callback);
return cancelable;
}    /**
* 下载文件
* @param <T>
*/
public static <T> Cancelable DownLoadFile(String url,String filepath,CommonCallback<T> callback){
RequestParams params=new RequestParams(url);        //设置断点续传
params.setAutoResume(true);
params.setSaveFilePath(filepath);
Cancelable cancelable = x.http().get(params, callback);
return cancelable;
}
}
public class JsonResponseParser implements ResponseParser {
//检查服务器返回的响应头信息
@Override
public void checkResponse(UriRequest request) throws Throwable {
}
/**
* 转换result为resultType类型的对象
*
* @param resultType  返回值类型(可能带有泛型信息)
* @param resultClass 返回值类型
* @param result      字符串数据
* @return
* @throws Throwable
*/
@Override
public Object parse(Type resultType, Class<?> resultClass, String result) throws Throwable {
return new Gson().fromJson(result, resultClass);
}
}
public class MyCallBack<ResultType> implements Callback.CommonCallback<ResultType>{

@Override
public void onSuccess(ResultType result) {        //可以根据公司的需求进行统一的请求成功的逻辑处理
}

@Override
public void onError(Throwable ex, boolean isOnCallback) {        //可以根据公司的需求进行统一的请求网络失败的逻辑处理
}

@Override
public void onCancelled(CancelledException cex) {

}

@Override    public void onFinished() {

}

}
1.发送get请求示例:
//本get请求来自于免费测试接口：http://www.k780.com/api/entry.baiduString url="http://api.k780.com:88/?app=idcard.get";
Map<String,String> map=new HashMap<>();
map.put("appkey", "10003");
map.put("sign", "b59bc3ef6191eb9f747dd4e83c99f2a4");
map.put("format", "json");
map.put("idcard", "110101199001011114");
XUtil.Get(url, map, new MyCallBack<PersonInfoBean>(){

@Override
public void onSuccess(PersonInfoBean result) {
super.onSuccess(result);
Log.e("result", result.toString());
}

@Override
public void onError(Throwable ex, boolean isOnCallback) {
super.onError(ex, isOnCallback);
}
});
2.发送post请求
String url="http://api.k780.com:88/?app=idcard.get";
Map<String,Object> map=new HashMap<>();
map.put("appkey", "10003");
map.put("sign", "b59bc3ef6191eb9f747dd4e83c99f2a4");
map.put("format", "json");
map.put("idcard", "110101199001011114");
XUtil.Post(url, map, new MyCallBack<PersonInfoBean>(){

@Override
public void onSuccess(PersonInfoBean result) {
super.onSuccess(result);
Log.e("result", result.toString());
}

@Override
public void onError(Throwable ex, boolean isOnCallback) {
super.onError(ex, isOnCallback);

}
});
3.上传文件
/**
* 上传文件(支持多文件上传)
*/
private void uploadfile() {        //图片上传地址
String url="";
Map<String,Object> map=new HashMap<>();        //传入自己的相应参数
//map.put(key, value);
//map.put(key, value);
XUtil.UpLoadFile(url, map, new MyCallBack<String>(){
@Override
public void onSuccess(String result) {
super.onSuccess(result);
}
@Override
public void onError(Throwable ex, boolean isOnCallback) {
super.onError(ex, isOnCallback);
}

});

}
4.下载文件
private void downloadfile() {        //文件下载地址
String url="";        //文件保存在本地的路径
String filepath="";
XUtil.DownLoadFile(url, filepath,new MyCallBack<File>(){
@Override
public void onSuccess(File result) {
super.onSuccess(result);
}
@Override
public void onError(Throwable ex, boolean isOnCallback) {
super.onError(ex, isOnCallback);
}
});
5.下载文件带进度条
private void downloadprogressfile() {        //文件下载地址
String url="";        //文件保存在本地的路径
String filepath="";
XUtil.DownLoadFile(url, filepath,new MyProgressCallBack<File>(){
@Override
public void onSuccess(File result) {
super.onSuccess(result);

}
@Override
public void onError(Throwable ex, boolean isOnCallback) {
super.onError(ex, isOnCallback);

}
@Override
public void onLoading(long total, long current,
boolean isDownloading) {
super.onLoading(total, current, isDownloading);
}
});
}
6.发送get请求(服务器以xml格式返回)
private void getxml() {
String url="http://flash.weather.com.cn/wmaps/xml/china.xml";
XUtil.Get(url, null, new MyCallBack<String>(){
@Override
public void onSuccess(String xmlString) {
super.onSuccess(xmlString);
try{
XmlPullParserFactory factory = XmlPullParserFactory.newInstance();
XmlPullParser xmlPullParser = factory.newPullParser();
xmlPullParser.setInput(new StringReader(xmlString));
int eventType = xmlPullParser.getEventType();
while (eventType != XmlPullParser.END_DOCUMENT) {
switch (eventType) {
case XmlPullParser.START_TAG:
String nodeName = xmlPullParser.getName();
if ("city".equals(nodeName)) {
String pName = xmlPullParser.getAttributeValue(0);
Log.e("TAG", "city is " + pName);
}
break;
}
eventType = xmlPullParser.next();
}
}catch(Exception e){
e.printStackTrace();
}
}            @Override
public void onError(Throwable ex, boolean isOnCallback) {
super.onError(ex, isOnCallback);
}

});
}
图片加载模块
用法:
x.image().bind(imageView, url, imageOptions);
x.image().bind(imageView, "file:///sdcard/test.gif", imageOptions);
x.image().bind(imageView, "assets://test.gif", imageOptions);
x.image().bind(imageView, url, imageOptions, new Callback.CommonCallback<Drawable>() {...});
x.image().loadDrawable(url, imageOptions, new Callback.CommonCallback<Drawable>() {...});
x.image().loadFile(url, imageOptions, new Callback.CommonCallback<File>() {...});
Xutils3的api还是比较简单的,相信大家都可以看懂，第一个参数传入一个View，第二个参数传入一个图片的网络地址，第三个参数一般是加载图片的配置。
下面看一下ImageOptions这个类吧:
ImageOptions options=new ImageOptions.Builder()
//设置加载过程中的图片.setLoadingDrawableId(R.drawable.ic_launcher)
//设置加载失败后的图片.setFailureDrawableId(R.drawable.ic_launcher)
//设置使用缓存.setUseMemCache(true)
//设置显示圆形图片.setCircular(true)
//设置支持gif.setIgnoreGif(false).build();
其余的一些配置请参考源码
如果需要对加载的图片进行操作的话，可以使用:
x.image().loadDrawable(url, imageOptions, new Callback.CommonCallback<Drawable>() {...});
通过返回的Drawable对象进行图片的处理，满足项目的个性化的要求.