标签:
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)
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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原文地址:http://my.oschina.net/yuanxulong/blog/501404