Android图片上传（看了别人的博客，图片无法上传，文章解决办法）
先讲一下在网上看到的方法。拍照可以正常上传，打开相册上传却部分机型不行，比如ZUK2，系统是6.0.1。还有很多机型有问题。原因应该是第三方修改底层造成。
功能实现只有两个类和一个只含有WebView的布局文件。
FileUtils.java
package com.fuiou.webviewupload;
import java.io.BufferedOutputStream;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import android.graphics.Bitmap;
import android.graphics.Bitmap.CompressFormat;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.graphics.Matrix;
import android.media.ExifInterface;
import android.text.TextUtils;
import android.util.Log;
public class FileUtils {
/**
* 把图片压缩到200K
*
* @param oldpath
* 压缩前的图片路径
* @param newPath
* 压缩后的图片路径
* @return
*/
/**
* 把图片压缩到200K
*
* @param oldpath
* 压缩前的图片路径
* @param newPath
* 压缩后的图片路径
* @return
*/
public static File compressFile(String oldpath, String newPath) {
Bitmap compressBitmap = FileUtils.decodeFile(oldpath);
Bitmap newBitmap = ratingImage(oldpath, compressBitmap);
ByteArrayOutputStream os = new ByteArrayOutputStream();
newBitmap.compress(CompressFormat.PNG, 100, os);
byte[] bytes = os.toByteArray();
File file = null ;
try {
file = FileUtils.getFileFromBytes(bytes, newPath);
} catch (Exception e) {
e.printStackTrace();
}finally{
if(newBitmap != null ){
if(!newBitmap.isRecycled()){
newBitmap.recycle();
}
newBitmap = null;
}
if(compressBitmap != null ){
if(!compressBitmap.isRecycled()){
compressBitmap.recycle();
}
compressBitmap = null;
}
}
return file;
}
private static Bitmap ratingImage(String filePath,Bitmap bitmap){
int degree = readPictureDegree(filePath);
return rotaingImageView(degree, bitmap);
}
/**
* 旋转图片
* @param angle
* @param bitmap
* @return Bitmap
*/
public static Bitmap rotaingImageView(int angle , Bitmap bitmap) {
//旋转图片 动作
Matrix matrix = new Matrix();;
matrix.postRotate(angle);
System.out.println("angle2=" + angle);
// 创建新的图片
Bitmap resizedBitmap = Bitmap.createBitmap(bitmap, 0, 0,
bitmap.getWidth(), bitmap.getHeight(), matrix, true);
return resizedBitmap;
}
/**
* 读取图片属性：旋转的角度
* @param path 图片绝对路径
* @return degree旋转的角度
*/
public static int readPictureDegree(String path) {
int degree = 0;
try {
ExifInterface exifInterface = new ExifInterface(path);
int orientation = exifInterface.getAttributeInt(ExifInterface.TAG_ORIENTATION, ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_90:
degree = 90;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
degree = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_270:
degree = 270;
break;
}
} catch (IOException e) {
e.printStackTrace();
}
return degree;
}
/**
* 把字节数组保存为一个文件
*
* @param b
* @param outputFile
* @return
*/
public static File getFileFromBytes(byte[] b, String outputFile) {
File ret = null;
BufferedOutputStream stream = null;
try {
ret = new File(outputFile);
FileOutputStream fstream = new FileOutputStream(ret);
stream = new BufferedOutputStream(fstream);
stream.write(b);
} catch (Exception e) {
// log.error("helper:get file from byte process error!");
e.printStackTrace();
} finally {
if (stream != null) {
try {
stream.close();
} catch (IOException e) {
// log.error("helper:get file from byte process error!");
e.printStackTrace();
}
}
}
return ret;
}
/**
* 图片压缩
*
* @param fPath
* @return
*/
public static Bitmap decodeFile(String fPath) {
BitmapFactory.Options opts = new BitmapFactory.Options();
opts.inJustDecodeBounds = true;
opts.inDither = false; // Disable Dithering mode
opts.inPurgeable = true; // Tell to gc that whether it needs free
opts.inInputShareable = true; // Which kind of reference will be used to
BitmapFactory.decodeFile(fPath, opts);
final int REQUIRED_SIZE = 200;
int scale = 1;
if (opts.outHeight > REQUIRED_SIZE || opts.outWidth > REQUIRED_SIZE) {
final int heightRatio = Math.round((float) opts.outHeight
/ (float) REQUIRED_SIZE);
final int widthRatio = Math.round((float) opts.outWidth
/ (float) REQUIRED_SIZE);
scale = heightRatio < widthRatio ? heightRatio : widthRatio;//
}
Log.i("scale", "scal ="+ scale);
opts.inJustDecodeBounds = false;
opts.inSampleSize = scale;
Bitmap bm = BitmapFactory.decodeFile(fPath, opts).copy(Config.ARGB_8888, false);
return bm;
}
/**
* 创建目录
* @param path
*/
public static void setMkdir(String path)
{
File file = new File(path);
if(!file.exists())
{
file.mkdirs();
Log.e("file", "目录不存在 创建目录 ");
}else{
Log.e("file", "目录存在");
}
}
/**
* 获取目录名称
* @param url
* @return FileName
*/
public static String getFileName(String url)
{
int lastIndexStart = url.lastIndexOf("/");
if(lastIndexStart!=-1)
{
return url.substring(lastIndexStart+1, url.length());
}else{
return null;
}
}
/**
* 删除该目录下的文件
*
* @param path
*/
public static void delFile(String path) {
if (!TextUtils.isEmpty(path)) {
File file = new File(path);
if (file.exists()) {
file.delete();
}
}
}
}
package com.fuiou.webviewupload;
import java.io.File;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.ContentValues;
import android.content.Context;
import android.content.DialogInterface;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.KeyEvent;
import android.webkit.ValueCallback;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import android.widget.Toast;
public class MainActivity extends Activity {
public static final String TAG = "MainActivity";
ValueCallback mUploadMessage;
private WebView mWebView;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initView();
}
private void initView() {
mWebView = (WebView) findViewById(R.id.web_view);
mWebView.getSettings().setJavaScriptEnabled(true);
mWebView.setWebChromeClient(new MyWebChromeClient());
mWebView.setWebViewClient(new MyWebViewClient(this));
// webView.loadUrl("file:///android_asset/upload_image.html");
mWebView.loadUrl("http://wx.xylbh.cn/myfiles/MyXYL.aspx");
}
private class MyWebViewClient extends WebViewClient{
private Context mContext;
public MyWebViewClient(Context context){
super();
mContext = context;
}
@Override
public void onPageStarted(WebView view, String url, Bitmap favicon) {
Log.d(TAG,"URL地址:" + url);
super.onPageStarted(view, url, favicon);
}
@Override
public void onPageFinished(WebView view, String url) {
Log.i(TAG, "onPageFinished");
super.onPageFinished(view, url);
}
@Override
public boolean shouldOverrideUrlLoading(WebView view, String url) {
view.loadUrl(url);
return true;
}
}
public static final int FILECHOOSER_RESULTCODE = 1;
private static final int REQ_CAMERA = FILECHOOSER_RESULTCODE+1;
private static final int REQ_CHOOSE = REQ_CAMERA+1;
private class MyWebChromeClient extends WebChromeClient {
// For Android 3.0+
public void openFileChooser(ValueCallback uploadMsg, String acceptType) {
Toast.makeText(MainActivity.this, "请选择相片或打开相机>4", Toast.LENGTH_SHORT).show();
if (mUploadMessage != null) return;
mUploadMessage = uploadMsg;
selectImage();
// Intent i = new Intent(Intent.ACTION_GET_CONTENT);
// i.addCategory(Intent.CATEGORY_OPENABLE);
// i.setType("*/*");
// startActivityForResult( Intent.createChooser( i, "File Chooser" ), FILECHOOSER_RESULTCODE );
}
// For Android < 3.0
public void openFileChooser(ValueCallback uploadMsg) {
openFileChooser( uploadMsg, "" );
}
// For Android > 4.1.1
public void openFileChooser(ValueCallback uploadMsg, String acceptType, String capture) {
Toast.makeText(MainActivity.this, "请选择相片或打开相机>4", Toast.LENGTH_SHORT).show();
openFileChooser(uploadMsg, acceptType);
}
}
/**
* 检查SD卡是否存在
*
* @return
*/
public final boolean checkSDcard() {
boolean flag = Environment.getExternalStorageState().equals(
Environment.MEDIA_MOUNTED);
if (!flag) {
Toast.makeText(this, "请插入手机存储卡再使用本功能",Toast.LENGTH_SHORT).show();
}
return flag;
}
String compressPath = "";
protected final void selectImage() {
if (!checkSDcard())
return;
String[] selectPicTypeStr = { "camera","photo" };
new AlertDialog.Builder(this)
.setItems(selectPicTypeStr,
new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog,
int which) {
switch (which) {
// 相机拍摄
case 0:
openCarcme();
break;
// 手机相册
case 1:
chosePic();
break;
default:
break;
}
compressPath = Environment
.getExternalStorageDirectory()
.getPath()
+ "/fuiou_wmp/temp";
new File(compressPath).mkdirs();
compressPath = compressPath + File.separator
+ "compress.jpg";
}
}).show();
}
String imagePaths;
Uri cameraUri;
/**
* 打开照相机
*/
private void openCarcme() {
Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
imagePaths = Environment.getExternalStorageDirectory().getPath()
+ "/fuiou_wmp/temp/"
+ (System.currentTimeMillis() + ".jpg");
// 必须确保文件夹路径存在，否则拍照后无法完成回调
File vFile = new File(imagePaths);
if (!vFile.exists()) {
File vDirPath = vFile.getParentFile();
vDirPath.mkdirs();
} else {
if (vFile.exists()) {
vFile.delete();
}
}
cameraUri = Uri.fromFile(vFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, cameraUri);
startActivityForResult(intent, REQ_CAMERA);
}
/**
* 拍照结束后
*/
private void afterOpenCamera() {
File f = new File(imagePaths);
addImageGallery(f);
File newFile = FileUtils.compressFile(f.getPath(), compressPath);
}
/** 解决拍照后在相册中找不到的问题 */
private void addImageGallery(File file) {
ContentValues values = new ContentValues();
values.put(MediaStore.Images.Media.DATA, file.getAbsolutePath());
values.put(MediaStore.Images.Media.MIME_TYPE, "image/jpeg");
getContentResolver().insert(
MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
}
/**
* 本地相册选择图片
*/
private void chosePic() {
FileUtils.delFile(compressPath);
Intent innerIntent = new Intent(Intent.ACTION_GET_CONTENT); // "android.intent.action.GET_CONTENT"
String IMAGE_UNSPECIFIED = "image/*";
innerIntent.setType(IMAGE_UNSPECIFIED); // 查看类型
Intent wrapperIntent = Intent.createChooser(innerIntent, null);
startActivityForResult(wrapperIntent, REQ_CHOOSE);
}
/**
* 选择照片后结束
*
* @param data
*/
private Uri afterChosePic(Intent data) {
// 获取图片的路径：
String[] proj = { MediaStore.Images.Media.DATA };
// 好像是android多媒体数据库的封装接口，具体的看Android文档
Cursor cursor = managedQuery(data.getData(), proj, null, null, null);
if(cursor == null ){
Toast.makeText(this, "上传的图片仅支持png或jpg格式",Toast.LENGTH_SHORT).show();
return null;
}
// 按我个人理解 这个是获得用户选择的图片的索引值
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
// 将光标移至开头 ，这个很重要，不小心很容易引起越界
cursor.moveToFirst();
// 最后根据索引值获取图片路径
String path = cursor.getString(column_index);
if(path != null && (path.endsWith(".png")||path.endsWith(".PNG")||path.endsWith(".jpg")||path.endsWith(".JPG"))){
File newFile = FileUtils.compressFile(path, compressPath);
return Uri.fromFile(newFile);
}else{
Toast.makeText(this, "上传的图片仅支持png或jpg格式",Toast.LENGTH_SHORT).show();
}
return null;
}
/**
* 返回文件选择
*/
@Override
protected void onActivityResult(int requestCode, int resultCode,
Intent intent) {
// if (requestCode == FILECHOOSER_RESULTCODE) {
// if (null == mUploadMessage)
// return;
// Uri result = intent == null || resultCode != RESULT_OK ? null
// : intent.getData();
// mUploadMessage.onReceiveValue(result);
// mUploadMessage = null;
// }
if (null == mUploadMessage)
return;
Uri uri = null;
if(requestCode == REQ_CAMERA ){
afterOpenCamera();
uri = cameraUri;
}else if(requestCode == REQ_CHOOSE){
uri = afterChosePic(intent);
}
mUploadMessage.onReceiveValue(uri);
mUploadMessage = null;
super.onActivityResult(requestCode, resultCode, intent);
}
public boolean onKeyDown(int keyCode, KeyEvent event) {
if ((keyCode == KeyEvent.KEYCODE_BACK) && mWebView.canGoBack()) {
mWebView.goBack();
return true;
}else{
finish();
}
return super.onKeyDown(keyCode, event);
}
}
.文中的地址：mWebView.loadUrl("http://wx.xylbh.cn/myfiles/MyXYL.aspx");是用的公司一个项目的个人信息链接，大家可以通过点击头像测试上传。
afterChosePic方法是上传结束后的处理方法。单独贴出来给大家讲讲：
private Uri afterChosePic(Intent data) {
// 获取图片的路径：
String[] proj = { MediaStore.Images.Media.DATA };
//Cursor cursor = managedQuery(data.getData(), proj, null, null, null);//方法老了，所以我用的下边的方法
Cursor cursor = getContentResolver().query(originalUri,proj, null, null, null); if(cursor == null ){
Toast.makeText(this, "cursor为空",Toast.LENGTH_SHORT).show();
return null;}
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);//这个值竟然每次都是0
cursor.moveToFirst();// 根据索引值获取图片路径String path = cursor.getString(column_index);//这里path值竟然是空
if(path != null && (path.endsWith(".png")||path.endsWith(".PNG")||path.endsWith(".jpg")||path.endsWith(".JPG"))){
File newFile = FileUtils.compressFile(path, compressPath);
return Uri.fromFile(newFile);
}else{
Toast.makeText(this, "上传的图片仅支持png或jpg格式",Toast.LENGTH_SHORT).show();}
return null;}下面是我修改后的文件，为了满足善变的Android，依然保留了原来的部分，这样可以满足所有的机型。
private Uri afterChosePic(Intent data) {
Uri originalUri = data.getData();
String[] proj = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(originalUri,proj, null, null, null);
if (cursor == null) {
Toast.makeText(this, "cursor为空", Toast.LENGTH_SHORT).show();
return null;
}
int column_index = cursor.getColumnIndexOrThrow(MediaStore.Images.Media.DATA);
cursor.moveToFirst();
String path = cursor.getString(column_index);
if (path != null
&& (path.endsWith(".png") || path.endsWith(".PNG") || path.endsWith(".jpg") || path.endsWith(".JPG"))) {
File newFile = FileUtils.compressFile(path, compressPath);
return Uri.fromFile(newFile);
} else {
// Toast.makeText(this, proj.toString(), Toast.LENGTH_SHORT).show();
}
return originalUri;
}程序使用了“千里之外”的代码（http://blog.csdn.net/woshinia/article/details/19030437），我只是做了少量修改。