实例介绍
【实例简介】
【实例截图】
【实例截图】
【核心代码】
package com.hexiaochun;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.util.ArrayList;
import java.util.List;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.apache.http.util.EntityUtils;
import com.hexiaochun.utils.Base64Coder;
import com.hexiaochun.utils.ZoomBitmap;
import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
public class MainActivity extends Activity implements OnClickListener {
// 服务器地址
private static final String HOST = "http://192.168.1.243:8080/ImageServer/upServer";
// 显示图片
private ImageView image;
// 两个but
private Button take;
private Button selete;
// 记录文件名
private String filename;
// 上传的bitmap
private Bitmap upbitmap;
private Button up;
//多线程通信
private Handler myHandler;
private ProgressDialog myDialog;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
image = (ImageView) this.findViewById(R.id.imageView1);
take = (Button) this.findViewById(R.id.take);
selete = (Button) this.findViewById(R.id.selete);
up=(Button)this.findViewById(R.id.up);
take.setOnClickListener(this);
selete.setOnClickListener(this);
up.setOnClickListener(this);
myHandler=new MyHandler();
}
public void onClick(View v) {
Intent intent;
switch (v.getId()) {
case R.id.take:
intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
filename = "xiaochun" System.currentTimeMillis() ".jpg";
System.out.println(filename);
// 下面这句指定调用相机拍照后的照片存储的路径
intent.putExtra(MediaStore.EXTRA_OUTPUT, Uri.fromFile(new File(
Environment.getExternalStorageDirectory(), filename)));
startActivityForResult(intent, 1);
break;
case R.id.selete:
intent = new Intent(Intent.ACTION_PICK, null);
intent.setDataAndType(MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
"image/*");
startActivityForResult(intent, 2);
break;
case R.id.up:
myDialog = ProgressDialog.show(this, "Loading...", "Please wait...", true, false);
new Thread(new Runnable() {
public void run() {
upload();
myHandler.sendMessage(new Message());
}
}).start();
break;
default:
break;
}
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
// TODO Auto-generated method stub
switch (requestCode) {
case 1:
//解成bitmap,方便裁剪
Bitmap bitmap=BitmapFactory.decodeFile(Environment.
getExternalStorageDirectory().getPath() "/" filename);
float wight=bitmap.getWidth();
float height=bitmap.getHeight();
// ZoomBitmap.zoomImage(bitmap, wight/8, height/8);
image.setImageBitmap(ZoomBitmap.zoomImage(bitmap, wight/8, height/8));
upbitmap=ZoomBitmap.zoomImage(bitmap, wight/8, height/8);
break;
case 2:
if(data!=null){
image.setImageURI(data.getData());
System.out.println(getAbsoluteImagePath(data.getData()));
upbitmap=BitmapFactory.decodeFile(getAbsoluteImagePath(data.getData()));
//剪一下,防止测试的时候上传的文件太大
upbitmap=ZoomBitmap.zoomImage(upbitmap, upbitmap.getWidth()/8, upbitmap.getHeight()/8);
}
break;
default:
break;
}
}
// 取到绝对路径
protected String getAbsoluteImagePath(Uri uri) {
// can post image
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = managedQuery(uri, proj, // Which columns to return
null, // WHERE clause; which rows to return (all rows)
null, // WHERE clause selection arguments (none)
null); // Order-by clause (ascending by name)
int column_index = cursor
.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
return cursor.getString(column_index);
}
// 上传
public void upload() {
ByteArrayOutputStream stream = new ByteArrayOutputStream();
upbitmap.compress(Bitmap.CompressFormat.JPEG, 60, stream);
byte[] b = stream.toByteArray();
// 将图片流以字符串形式存储下来
String file = new String(Base64Coder.encodeLines(b));
HttpClient client = new DefaultHttpClient();
// 设置上传参数
List<NameValuePair> formparams = new ArrayList<NameValuePair>();
formparams.add(new BasicNameValuePair("file", file));
HttpPost post = new HttpPost(HOST);
UrlEncodedFormEntity entity;
try {
entity = new UrlEncodedFormEntity(formparams, "UTF-8");
post.addHeader("Accept",
"text/javascript, text/html, application/xml, text/xml");
post.addHeader("Accept-Charset", "GBK,utf-8;q=0.7,*;q=0.3");
post.addHeader("Accept-Encoding", "gzip,deflate,sdch");
post.addHeader("Connection", "Keep-Alive");
post.addHeader("Cache-Control", "no-cache");
post.addHeader("Content-Type", "application/x-www-form-urlencoded");
post.setEntity(entity);
HttpResponse response = client.execute(post);
System.out.println(response.getStatusLine().getStatusCode());
HttpEntity e = response.getEntity();
System.out.println(EntityUtils.toString(e));
if (200 == response.getStatusLine().getStatusCode()) {
System.out.println("上传完成");
} else {
System.out.println("上传失败");
}
client.getConnectionManager().shutdown();
} catch (Exception e) {
e.printStackTrace();
}
}
private class MyHandler extends Handler{
@Override
public void handleMessage(Message msg) {
myDialog.dismiss();
}
}
}
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