引用开源框架通过AsyncHttpClient进行文件上传
作者:互联网
一、步骤:
1.添加权限(访问网络权限和读写权限)
2.获取上传文件路径并判断是否为空
3.若不为空,创建异步请求对象
4.创建上传文件路径
5.执行post请求(指定url路径,封装上传参数,新建AsyncHttpResponseHandler方法)
二、查看参考文档
三、实例项目解析
运行效果如下:
在本地文件夹中查看是否获取到图片,如下图显示
重点代码:均有详细解析,请认真查看注释
1、在AndroidManifest.xml中添加权限
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="android.permission.MOUNT_UNMOUNT_FILESYSTEMS"/>
2、布局文件activity_main.xml
- <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
- xmlns:tools="http://schemas.android.com/tools"
- android:layout_width="match_parent"
- android:layout_height="match_parent"
- android:paddingBottom="@dimen/activity_vertical_margin"
- android:paddingLeft="@dimen/activity_horizontal_margin"
- android:paddingRight="@dimen/activity_horizontal_margin"
- android:paddingTop="@dimen/activity_vertical_margin"
- tools:context=".MainActivity" >
- <TextView
- android:id="@+id/textView1"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:text="文件上传" />
- <EditText
- android:id="@+id/et_upload"
- android:layout_width="match_parent"
- android:layout_height="wrap_content"
- android:layout_below="@+id/textView1"
- android:ems="10"
- android:text="/storage/sdcard0/1.jpg">
- <requestFocus />
- </EditText>
- <Button
- android:id="@+id/btn_upload"
- android:layout_width="wrap_content"
- android:layout_height="wrap_content"
- android:layout_below="@+id/et_upload"
- android:onClick="upload"
- android:text="上传文件" />
- </RelativeLayout>
3、MainActivity.java
- package com.example.android_upload;
- import java.io.File;
- import org.apache.http.Header;
- import android.app.Activity;
- import android.os.Bundle;
- import android.text.TextUtils;
- import android.view.View;
- import android.widget.EditText;
- import android.widget.Toast;
- import com.loopj.android.http.AsyncHttpClient;
- import com.loopj.android.http.AsyncHttpResponseHandler;
- import com.loopj.android.http.RequestParams;
- public class MainActivity extends Activity {
- private EditText et_file;
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main);
- //获取控件
- et_file = (EditText) findViewById(R.id.et_upload);
- }
- //点击上传按钮
- public void upload(View v) {
- int id = v.getId();
- switch (id) {
- case R.id.btn_upload:
- //获取上传文件的路径
- String path = et_file.getText().toString();
- //判断上次路径是否为空
- if (TextUtils.isEmpty(path.trim())) {
- Toast.makeText(this, "上次文件路径不能为空", 1).show();
- } else {
- //异步的客户端对象
- AsyncHttpClient client = new AsyncHttpClient();
- //指定url路径
- String url = "http://172.16.237.144:8080/Login/UploadServlet";
- //封装文件上传的参数
- RequestParams params = new RequestParams();
- //根据路径创建文件
- File file = new File(path);
- try {
- //放入文件
- params.put("profile_picture", file);
- } catch (Exception e) {
- // TODO: handle exception
- System.out.println("文件不存在----------");
- }
- //执行post请求
- client.post(url,params, new AsyncHttpResponseHandler() {
- @Override
- public void onSuccess(int statusCode, Header[] headers,
- byte[] responseBody) {
- if (statusCode == 200) {
- Toast.makeText(getApplicationContext(), "上次成功", 1)
- .show();
- }
- }
- @Override
- public void onFailure(int statusCode, Header[] headers,
- byte[] responseBody, Throwable error) {
- error.printStackTrace();
- }
- });
- }
- break;
- default:
- break;
- }
- }
- }
重点代码就是这些,自己动手查看一下效果吧!~
开源框架资源:http://download.csdn.net/detail/zhaoyazhi2129/7400787
源码:http://download.csdn.net/detail/zhaoyazhi2129/7400811
转发请标明原文地址http://blog.csdn.net/zhaoyazhi2129/article/details/27048149
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标签:layout,http,upload,AsyncHttpClient,开源,import,android,上传,id 来源: https://www.cnblogs.com/skiwnchhw/p/10472629.html