最近在做项目过程中遇到拍照上传功能的实现,但是在图片文件过大时(4-5M),会报下面的错误:05-28 18:04:42.632: E/AndroidRuntime(6468): FATAL EXCEPTION: Thread-11
05-28 18:04:42.632: E/AndroidRuntime(6468): java.lang.OutOfMemoryError
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:93)
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
05-28 18:04:42.632: E/AndroidRuntime(6468): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl$DefaultHttpOutputStream.write(HttpURLConnectionImpl.java:750)
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.io.DataOutputStream.write(DataOutputStream.java:101)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity.uploadFileUtil(FileUploadActivity.java:323)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity.uploadFile(FileUploadActivity.java:173)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity.access$7(FileUploadActivity.java:156)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity$2.run(FileUploadActivity.java:114)
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.lang.Thread.run(Thread.java:1096)
我的代码为:
private String uploadFileUtil(File file, String RequestURL) {
String result = null;
String BOUNDARY = UUID.randomUUID().toString();
String PREFIX = "--", LINE_END = "\r\n";
String CONTENT_TYPE = "multipart/form-data";
int bytesAvailable, bufferSize;
int maxBufferSize = 1*1024*1024;
byte[] buffer; try {
URL url = new URL(RequestURL);
httpUrlConnection = (HttpURLConnection) url.openConnection();
httpUrlConnection.setReadTimeout(Constant.TIME_OUT);
httpUrlConnection.setConnectTimeout(Constant.TIME_OUT);
httpUrlConnection.setDoInput(true);
httpUrlConnection.setDoOutput(true);
httpUrlConnection.setUseCaches(false);
httpUrlConnection.setRequestMethod("POST");
httpUrlConnection.setRequestProperty("Charset", Constant.CHARSET_UTF8);
httpUrlConnection.setRequestProperty("connection", "keep-alive");
httpUrlConnection.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary="
+ BOUNDARY); if (file != null) {
DataOutputStream dataOutputStream;
dataOutputStream = new DataOutputStream(httpUrlConnection.getOutputStream());
StringBuffer stringBuffer = new StringBuffer();
stringBuffer.append(PREFIX);
stringBuffer.append(BOUNDARY);
stringBuffer.append(LINE_END); stringBuffer
.append("Content-Disposition: form-data; name=\"img\"; filename=\""
+ file.getName() + "\"" + LINE_END);
stringBuffer.append("Content-Type: application/octet-stream; charset="
+ Constant.CHARSET_UTF8 + LINE_END);
stringBuffer.append(LINE_END);
dataOutputStream.write(stringBuffer.toString().getBytes());
FileInputStream fileInputStream = new FileInputStream(file);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
uploadFileSize = 0;
sendMsg(0);
byte byt[] = new byte[bufferSize];
fileInputStream.read(byt);
int len = fileInputStream.read(buffer, 0, bufferSize);
do {
if (len == -1) {
break;
}
dataOutputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
uploadFileSize += len;
len = fileInputStream.read(buffer, 0, bufferSize);
sendMsg(1);
} while (!uploadCanceldBoolean && len>0); dataOutputStream.write(LINE_END.getBytes());
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
dataOutputStream.write(end_data);
fileInputStream.close();
dataOutputStream.flush();
dataOutputStream.close();
DataInputStream input;
input = new DataInputStream(httpUrlConnection.getInputStream());
StringBuffer stringBuffer1 = new StringBuffer();
int ss;
while ((ss = input.read()) != -1) {
stringBuffer1.append((char) ss);
}
result = stringBuffer1.toString();
}
}
catch (IOException e) {
e.printStackTrace();
}
return result;
}
05-28 18:04:42.632: E/AndroidRuntime(6468): java.lang.OutOfMemoryError
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.io.ByteArrayOutputStream.expand(ByteArrayOutputStream.java:93)
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.io.ByteArrayOutputStream.write(ByteArrayOutputStream.java:218)
05-28 18:04:42.632: E/AndroidRuntime(6468): at org.apache.harmony.luni.internal.net.www.protocol.http.HttpURLConnectionImpl$DefaultHttpOutputStream.write(HttpURLConnectionImpl.java:750)
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.io.DataOutputStream.write(DataOutputStream.java:101)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity.uploadFileUtil(FileUploadActivity.java:323)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity.uploadFile(FileUploadActivity.java:173)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity.access$7(FileUploadActivity.java:156)
05-28 18:04:42.632: E/AndroidRuntime(6468): at com.broadvision.clearvale.activities.files.FileUploadActivity$2.run(FileUploadActivity.java:114)
05-28 18:04:42.632: E/AndroidRuntime(6468): at java.lang.Thread.run(Thread.java:1096)
我的代码为:
private String uploadFileUtil(File file, String RequestURL) {
String result = null;
String BOUNDARY = UUID.randomUUID().toString();
String PREFIX = "--", LINE_END = "\r\n";
String CONTENT_TYPE = "multipart/form-data";
int bytesAvailable, bufferSize;
int maxBufferSize = 1*1024*1024;
byte[] buffer; try {
URL url = new URL(RequestURL);
httpUrlConnection = (HttpURLConnection) url.openConnection();
httpUrlConnection.setReadTimeout(Constant.TIME_OUT);
httpUrlConnection.setConnectTimeout(Constant.TIME_OUT);
httpUrlConnection.setDoInput(true);
httpUrlConnection.setDoOutput(true);
httpUrlConnection.setUseCaches(false);
httpUrlConnection.setRequestMethod("POST");
httpUrlConnection.setRequestProperty("Charset", Constant.CHARSET_UTF8);
httpUrlConnection.setRequestProperty("connection", "keep-alive");
httpUrlConnection.setRequestProperty("Content-Type", CONTENT_TYPE + ";boundary="
+ BOUNDARY); if (file != null) {
DataOutputStream dataOutputStream;
dataOutputStream = new DataOutputStream(httpUrlConnection.getOutputStream());
StringBuffer stringBuffer = new StringBuffer();
stringBuffer.append(PREFIX);
stringBuffer.append(BOUNDARY);
stringBuffer.append(LINE_END); stringBuffer
.append("Content-Disposition: form-data; name=\"img\"; filename=\""
+ file.getName() + "\"" + LINE_END);
stringBuffer.append("Content-Type: application/octet-stream; charset="
+ Constant.CHARSET_UTF8 + LINE_END);
stringBuffer.append(LINE_END);
dataOutputStream.write(stringBuffer.toString().getBytes());
FileInputStream fileInputStream = new FileInputStream(file);
// create a buffer of maximum size
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
buffer = new byte[bufferSize];
uploadFileSize = 0;
sendMsg(0);
byte byt[] = new byte[bufferSize];
fileInputStream.read(byt);
int len = fileInputStream.read(buffer, 0, bufferSize);
do {
if (len == -1) {
break;
}
dataOutputStream.write(buffer, 0, bufferSize);
bytesAvailable = fileInputStream.available();
bufferSize = Math.min(bytesAvailable, maxBufferSize);
uploadFileSize += len;
len = fileInputStream.read(buffer, 0, bufferSize);
sendMsg(1);
} while (!uploadCanceldBoolean && len>0); dataOutputStream.write(LINE_END.getBytes());
byte[] end_data = (PREFIX + BOUNDARY + PREFIX + LINE_END).getBytes();
dataOutputStream.write(end_data);
fileInputStream.close();
dataOutputStream.flush();
dataOutputStream.close();
DataInputStream input;
input = new DataInputStream(httpUrlConnection.getInputStream());
StringBuffer stringBuffer1 = new StringBuffer();
int ss;
while ((ss = input.read()) != -1) {
stringBuffer1.append((char) ss);
}
result = stringBuffer1.toString();
}
}
catch (IOException e) {
e.printStackTrace();
}
return result;
}
分块,分块协议要怎么做呢?
import java.io.File;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.drawable.BitmapDrawable;
import android.graphics.drawable.Drawable;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageButton;
import android.widget.ImageView;
/**
* @Title: PicCutDemoActivity.java
* @Package com.xiaoma.piccut.demo
* @Description: 图片裁剪功能测试
* @author XiaoMa
*/
public class PicCutDemoActivity extends Activity implements OnClickListener {
private ImageButton ib = null;
private ImageView iv = null;
private Button btn = null;
private String tp = null;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
//初始化
init();
}
/**
* 初始化方法实现
*/
private void init() {
ib = (ImageButton) findViewById(R.id.imageButton1);
iv = (ImageView) findViewById(R.id.imageView1);
btn = (Button) findViewById(R.id.button1);
ib.setOnClickListener(this);
iv.setOnClickListener(this);
btn.setOnClickListener(this);
}
/**
* 控件点击事件实现
*
* 因为有朋友问不同控件的背景图裁剪怎么实现,
* 我就在这个地方用了三个控件,只为了自己记录学习
* 大家觉得没用的可以跳过啦
*/
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.imageButton1:
ShowPickDialog();
break;
case R.id.imageView1:
ShowPickDialog();
break;
case R.id.button1:
ShowPickDialog();
break;
default:
break;
}
}
/**
* 选择提示对话框
*/
private void ShowPickDialog() {
new AlertDialog.Builder(this)
.setTitle("设置头像...")
.setNegativeButton("相册", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
dialog.dismiss();
/**
* 刚开始,我自己也不知道ACTION_PICK是干嘛的,后来直接看Intent源码,
* 可以发现里面很多东西,Intent是个很强大的东西,大家一定仔细阅读下
*/
Intent intent = new Intent(Intent.ACTION_PICK, null);
/**
* 下面这句话,与其它方式写是一样的效果,如果:
* intent.setData(MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
* intent.setType(""image/*");设置数据类型
* 如果朋友们要限制上传到服务器的图片类型时可以直接写如:"image/jpeg 、 image/png等的类型"
* 这个地方小马有个疑问,希望高手解答下:就是这个数据URI与类型为什么要分两种形式来写呀?有什么区别?
*/
intent.setDataAndType(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI,
"image/*");
startActivityForResult(intent, 1);
}
})
.setPositiveButton("拍照", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int whichButton) {
dialog.dismiss();
/**
* 下面这句还是老样子,调用快速拍照功能,至于为什么叫快速拍照,大家可以参考如下官方
* 文档,you_sdk_path/docs/guide/topics/media/camera.html
* 我刚看的时候因为太长就认真看,其实是错的,这个里面有用的太多了,所以大家不要认为
* 官方文档太长了就不看了,其实是错的,这个地方小马也错了,必须改正
*/
Intent intent = new Intent(
MediaStore.ACTION_IMAGE_CAPTURE);
//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(),
"xiaoma.jpg")));
startActivityForResult(intent, 2);
}
}).show();
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
switch (requestCode) {
// 如果是直接从相册获取
case 1:
startPhotoZoom(data.getData());
break;
// 如果是调用相机拍照时
case 2:
File temp = new File(Environment.getExternalStorageDirectory()
+ "/xiaoma.jpg");
startPhotoZoom(Uri.fromFile(temp));
break;
// 取得裁剪后的图片
case 3:
/**
* 非空判断大家一定要验证,如果不验证的话,
* 在剪裁之后如果发现不满意,要重新裁剪,丢弃
* 当前功能时,会报NullException,小马只
* 在这个地方加下,大家可以根据不同情况在合适的
* 地方做判断处理类似情况
*
*/
if(data != null){
setPicToView(data);
}
break;
default:
break;
}
super.onActivityResult(requestCode, resultCode, data);
}
/**
* 裁剪图片方法实现
* @param uri
*/
public void startPhotoZoom(Uri uri) {
/*
* 至于下面这个Intent的ACTION是怎么知道的,大家可以看下自己路径下的如下网页
* yourself_sdk_path/docs/reference/android/content/Intent.html
* 直接在里面Ctrl+F搜:CROP ,之前小马没仔细看过,其实安卓系统早已经有自带图片裁剪功能,
* 是直接调本地库的,小马不懂C C++ 这个不做详细了解去了,有轮子就用轮子,不再研究轮子是怎么
* 制做的了...吼吼
*/
Intent intent = new Intent("ccc");
intent.setDataAndType(uri, "image/*");
//下面这个crop=true是设置在开启的Intent中设置显示的VIEW可裁剪
intent.putExtra("crop", "true");
// aspectX aspectY 是宽高的比例
intent.putExtra("aspectX", 1);
intent.putExtra("aspectY", 1);
// outputX outputY 是裁剪图片宽高
intent.putExtra("outputX", 150);
intent.putExtra("outputY", 150);
intent.putExtra("return-data", true);
startActivityForResult(intent, 3);
}
/**
* 保存裁剪之后的图片数据
* @param picdata
*/
private void setPicToView(Intent picdata) {
Bundle extras = picdata.getExtras();
if (extras != null) {
Bitmap photo = extras.getParcelable("data");
Drawable drawable = new BitmapDrawable(photo);
/**
* 下面注释的方法是将裁剪之后的图片以Base64Coder的字符方式上
* 传到服务器,QQ头像上传采用的方法跟这个类似
*/
/*ByteArrayOutputStream stream = new ByteArrayOutputStream();
photo.compress(Bitmap.CompressFormat.JPEG, 60, stream);
byte[] b = stream.toByteArray();
// 将图片流以字符串形式存储下来
tp = new String(Base64Coder.encodeLines(b));
这个地方大家可以写下给服务器上传图片的实现,直接把tp直接上传就可以了,
服务器处理的方法是服务器那边的事了,吼吼
如果下载到的服务器的数据还是以Base64Coder的形式的话,可以用以下方式转换
为我们可以用的图片类型就OK啦...吼吼
Bitmap dBitmap = BitmapFactory.decodeFile(tp);
Drawable drawable = new BitmapDrawable(dBitmap);
*/
ib.setBackgroundDrawable(drawable);
iv.setBackgroundDrawable(drawable);
}
}