// banner轮播依赖
compile 'com.youth.banner:banner:1.4.9'
//网络请求依赖包
compile 'com.squareup.okhttp3:okhttp:3.4.2'
compile 'com.google.code.gson:gson:2.2.4'
//图片依赖比imagerloader更方便:
compile 'com.facebook.fresco:fresco:1.5.0'
compile 'com.github.bumptech.glide:glide:3.7.0'
public class time5Activity extends AppCompatActivity {
String pai = "http://139.224.15.52/gouzhuanpm/app/getAdvertisement";
private List list = new ArrayList<>();//定义图片的集合
private List list1= new ArrayList<>();//定义文本的集合
private Banner mBanner;//轮播图片
private TimeBean bean;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_time5);
bannerxia();//轮播图
// 返回按钮
// TextView time5_TextView = (TextView) findViewById(R.id.time5_TextView);
// time5_TextView.setOnClickListener(new View.OnClickListener() {
// @Override
// public void onClick(View view) {
// Intent localIntent=new Intent(time5Activity.this,MainActivity.class);
// startActivity(localIntent);
// }
// });
}
/*************************
* 下半部分轮播图
* ***********************
*/
private void bannerxia() {
mBanner = (Banner) findViewById(R.id.banner);
OkHttp.getAsync(pai, new OkHttp.DataCallBack() {
@Override
public void requestFailure(Request request, IOException e) {
}
@Override
public void requestSuccess(String result) throws Exception {
//在成功的方法里面 new出gson
Gson gson=new Gson();
//gson解析
bean = gson.fromJson(result, TimeBean.class);
//这里我是打印了一下得到的数据
Log.i("TAG", "onSuccess: "+ bean.getData().toString());
//遍历 得到没一个图片 和他对应的标题
for (int i = 0; i
布局:
Okhttp工具类:
/**
* Created by Administrator on 2018/8/10 0010.
*/
public class OkHttp {
/**
* 静态实例
*/
private static OkHttp sOkHttpManager;
/**
* okhttpclient实例
*/
private OkHttpClient mClient;
/**
* 因为我们请求数据一般都是子线程中请求,在这里我们使用了handler
*/
private Handler mHandler;
/**
* 构造方法
*/
private OkHttp() {
mClient = new OkHttpClient();
/**
* 在这里直接设置连接超时.读取超时,写入超时
*/
mClient.newBuilder().connectTimeout(10, TimeUnit.SECONDS);
mClient.newBuilder().readTimeout(10, TimeUnit.SECONDS);
mClient.newBuilder().writeTimeout(10, TimeUnit.SECONDS);
/**
* 如果是用的3.0之前的版本 使用以下直接设置连接超时.读取超时,写入超时
*/
//client.setConnectTimeout(10, TimeUnit.SECONDS);
//client.setWriteTimeout(10, TimeUnit.SECONDS);
//client.setReadTimeout(30, TimeUnit.SECONDS);
/**
* 初始化handler
*/
mHandler = new Handler(Looper.getMainLooper());
}
/**
* 单例模式 获取OkHttp实例
*
* @return
*/
public static OkHttp getInstance() {
if (sOkHttpManager == null) {
sOkHttpManager = new OkHttp();
}
return sOkHttpManager;
}
//-------------------------同步的方式请求数据--------------------------
/**
* 对外提供的get方法,同步的方式
*
* @param url 传入的地址
* @return
*/
public static Response getSync(String url) {
//通过获取到的实例来调用内部方法
return sOkHttpManager.inner_getSync(url);
}
/**
* GET方式请求的内部逻辑处理方式,同步的方式
*
* @param url
* @return
*/
private Response inner_getSync(String url) {
Request request = new Request.Builder().url(url).build();
Response response = null;
try {
//同步请求返回的是response对象
response = mClient.newCall(request).execute();
} catch (IOException e) {
e.printStackTrace();
}
return response;
}
/**
* 对外提供的同步获取String的方法
*
* @param url
* @return
*/
public static String getSyncString(String url) {
return sOkHttpManager.inner_getSyncString(url);
}
/**
* 同步方法
*/
private String inner_getSyncString(String url) {
String result = null;
try {
/**
* 把取得到的结果转为字符串,这里最好用string()
*/
result = inner_getSync(url).body().string();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
//-------------------------异步的方式请求数据--------------------------
public static void getAsync(String url, DataCallBack callBack) {
getInstance().inner_getAsync(url, callBack);
}
/**
* 内部逻辑请求的方法
*
* @param url
* @param callBack
* @return
*/
private void inner_getAsync(String url, final DataCallBack callBack) {
final Request request = new Request.Builder().url(url).build();
mClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
deliverDataFailure(request, e, callBack);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String result = null;
try {
result = response.body().string();
} catch (IOException e) {
deliverDataFailure(request, e, callBack);
}
deliverDataSuccess(result, callBack);
}
});
}
/**
* 分发失败的时候调用
*
* @param request
* @param e
* @param callBack
*/
private void deliverDataFailure(final Request request, final IOException e, final DataCallBack callBack) {
/**
* 在这里使用异步处理
*/
mHandler.post(new Runnable() {
@Override
public void run() {
if (callBack != null) {
callBack.requestFailure(request, e);
}
}
});
}
/**
* 分发成功的时候调用
*
* @param result
* @param callBack
*/
private void deliverDataSuccess(final String result, final DataCallBack callBack) {
/**
* 在这里使用异步线程处理
*/
mHandler.post(new Runnable() {
@Override
public void run() {
if (callBack != null) {
try {
callBack.requestSuccess(result);
} catch (Exception e) {
e.printStackTrace();
}
}
}
});
}
/**
* 数据回调接口
*/
public interface DataCallBack {
void requestFailure(Request request, IOException e);
void requestSuccess(String result) throws Exception;
}
//-------------------------提交表单--------------------------
public static void postAsync(String url, Map params, DataCallBack callBack) {
getInstance().inner_postAsync(url, params, callBack);
}
private void inner_postAsync(String url, Map params, final DataCallBack callBack) {
RequestBody requestBody = null;
if (params == null) {
params = new HashMap<>();
}
/**
* 如果是3.0之前版本的,构建表单数据是下面的一句
*/
//FormEncodingBuilder builder = new FormEncodingBuilder();
/**
* 3.0之后版本
*/
FormBody.Builder builder = new FormBody.Builder();
/**
* 在这对添加的参数进行遍历,map遍历有四种方式,如果想要了解的可以网上查找
*/
for (Map.Entry map : params.entrySet()) {
String key = map.getKey().toString();
String value = null;
/**
* 判断值是否是空的
*/
if (map.getValue() == null) {
value = "";
} else {
value = map.getValue();
}
/**
* 把key和value添加到formbody中
*/
builder.add(key, value);
}
requestBody = builder.build();
//结果返回
// 请求对象
final Request request = new Request.Builder().url(url).post(requestBody).build();
mClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
deliverDataFailure(request, e, callBack);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
String result = response.body().string();
deliverDataSuccess(result, callBack);
}
});
}
//-------------------------文件下载--------------------------
public static void downloadAsync(String url, String desDir, DataCallBack callBack) {
getInstance().inner_downloadAsync(url, desDir, callBack);
}
/**
* 下载文件的内部逻辑处理类
*
* @param url 下载地址
* @param desDir 目标地址
* @param callBack
*/
private void inner_downloadAsync(final String url, final String desDir, final DataCallBack callBack) {
final Request request = new Request.Builder().url(url).build();
mClient.newCall(request).enqueue(new Callback() {
@Override
public void onFailure(Call call, IOException e) {
deliverDataFailure(request, e, callBack);
}
@Override
public void onResponse(Call call, Response response) throws IOException {
/**
* 在这里进行文件的下载处理
*/
InputStream inputStream = null;
FileOutputStream fileOutputStream = null;
try {
//文件名和目标地址
File file = new File(desDir, getFileName(url));
//把请求回来的response对象装换为字节流
inputStream = response.body().byteStream();
fileOutputStream = new FileOutputStream(file);
int len = 0;
byte[] bytes = new byte[2048];
//循环读取数据
while ((len = inputStream.read(bytes)) != -1) {
fileOutputStream.write(bytes, 0, len);
}
//关闭文件输出流
fileOutputStream.flush();
//调用分发数据成功的方法
deliverDataSuccess(file.getAbsolutePath(), callBack);
} catch (IOException e) {
//如果失败,调用此方法
deliverDataFailure(request, e, callBack);
e.printStackTrace();
} finally {
if (inputStream != null) {
inputStream.close();
}
if (fileOutputStream != null) {
fileOutputStream.close();
}
}
}
});
}
/**
* 根据文件url获取文件的路径名字
*
* @param url
* @return
*/
private String getFileName(String url) {
int separatorIndex = url.lastIndexOf("/");
String path = (separatorIndex < 0) ? url : url.substring(separatorIndex + 1, url.length());
return path;
}
}