[Phonegap+Sencha Touch] 移动开发29 安卓navigator.camera.getPicture得到图片的真实路径

原文地址：http://blog.csdn.net/lovelyelfpop/article/details/38313021

phonegap的拍照插件选择图库中的图片，代码如下：

navigator.camera.getPicture(function(uri){console.log(uri);//这里得到图片的uri
}, function(err){ console.log(err); }, {quality: 70,destinationType: navigator.camera.DestinationType.FILE_URI,sourceType: navigator.camera.PictureSourceType.PHOTOLIBRARY,saveToPhotoAlbum: true
});

返回的图片路径是这样的：

安卓4.4之前：content://media/external/images/media/62

安卓4.4：content://com.android.providers.media.documents/document/image:62

这种路径叫做Content URI，并不是图片的真实路径，真实路径应该是这样的：file:///storage/emulated/0/DCIM/Camera/1406773746740.jpg。

解决办法：

1、打开插件文件org.apache.cordova.camera\src\android\CameraLauncher.java

在里面添加下面的代码：

/*** Get a file path from a Uri. This will get the the path for Storage Access* Framework Documents, as well as the _data field for the MediaStore and* other file-based ContentProviders.** @param context The context.* @param uri The Uri to query.* @author paulburke*/@SuppressLint("NewApi")public static String getPath(final Context context, final Uri uri) {final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;// DocumentProviderif (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {// ExternalStorageProviderif (isExternalStorageDocument(uri)) {final String docId = DocumentsContract.getDocumentId(uri);final String[] split = docId.split(":");final String type = split[0];if ("primary".equalsIgnoreCase(type)) {return Environment.getExternalStorageDirectory() + "/" + split[1];}// TODO handle non-primary volumes}// DownloadsProviderelse if (isDownloadsDocument(uri)) {final String id = DocumentsContract.getDocumentId(uri);final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));return getDataColumn(context, contentUri, null, null);}// MediaProviderelse if (isMediaDocument(uri)) {final String docId = DocumentsContract.getDocumentId(uri);final String[] split = docId.split(":");final String type = split[0];Uri contentUri = null;if ("image".equals(type)) {contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;} else if ("video".equals(type)) {contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;} else if ("audio".equals(type)) {contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;}final String selection = "_id=?";final String[] selectionArgs = new String[] {split[1]};return getDataColumn(context, contentUri, selection, selectionArgs);}}// MediaStore (and general)else if ("content".equalsIgnoreCase(uri.getScheme())) {// Return the remote addressif (isGooglePhotosUri(uri))return uri.getLastPathSegment();return getDataColumn(context, uri, null, null);}// Fileelse if ("file".equalsIgnoreCase(uri.getScheme())) {return uri.getPath();}return null;}/*** Get the value of the data column for this Uri. This is useful for* MediaStore Uris, and other file-based ContentProviders.** @param context The context.* @param uri The Uri to query.* @param selection (Optional) Filter used in the query.* @param selectionArgs (Optional) Selection arguments used in the query.* @return The value of the _data column, which is typically a file path.*/public static String getDataColumn(Context context, Uri uri, String selection,String[] selectionArgs) {Cursor cursor = null;final String column = "_data";final String[] projection = {column};try {cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs,null);if (cursor != null && cursor.moveToFirst()) {final int index = cursor.getColumnIndexOrThrow(column);return cursor.getString(index);}} finally {if (cursor != null)cursor.close();}return null;}/*** @param uri The Uri to check.* @return Whether the Uri authority is ExternalStorageProvider.*/public static boolean isExternalStorageDocument(Uri uri) {return "com.android.externalstorage.documents".equals(uri.getAuthority());}/*** @param uri The Uri to check.* @return Whether the Uri authority is DownloadsProvider.*/public static boolean isDownloadsDocument(Uri uri) {return "com.android.providers.downloads.documents".equals(uri.getAuthority());}/*** @param uri The Uri to check.* @return Whether the Uri authority is MediaProvider.*/public static boolean isMediaDocument(Uri uri) {return "com.android.providers.media.documents".equals(uri.getAuthority());}/*** @param uri The Uri to check.* @return Whether the Uri authority is Google Photos.*/public static boolean isGooglePhotosUri(Uri uri) {return "com.google.android.apps.photos.content".equals(uri.getAuthority());}

2、然后找到下面的代码（processResultFromGallery方法）：

if (this.targetHeight == -1 && this.targetWidth == -1 &&(destType == FILE_URI || destType == NATIVE_URI) && !this.correctOrientation) {this.callbackContext.success(uri.toString());
}

修改成这样

if (this.targetHeight == -1 && this.targetWidth == -1 &&(destType == FILE_URI || destType == NATIVE_URI) && !this.correctOrientation) {Context context = this.webView.getContext().getApplicationContext();this.callbackContext.success(getPath(context, uri));
}

3、找到下面代码（processResultFromGallery方法）：

else if (destType == FILE_URI || destType == NATIVE_URI) {// Did we modify the image?if ( (this.targetHeight > 0 && this.targetWidth > 0) ||(this.correctOrientation && this.orientationCorrected) ) {try {String modifiedPath = this.ouputModifiedBitmap(bitmap, uri);// The modified image is cached by the app in order to get around this and not have to delete you// application cache I'm adding the current system time to the end of the file url.this.callbackContext.success("file://" + modifiedPath + "?" + System.currentTimeMillis());} catch (Exception e) {e.printStackTrace();this.failPicture("Error retrieving image.");}}else {this.callbackContext.success(uri.toString());}
}

修改成这样（else部分）

else if (destType == FILE_URI || destType == NATIVE_URI) {// Did we modify the image?if ( (this.targetHeight > 0 && this.targetWidth > 0) ||(this.correctOrientation && this.orientationCorrected) ) {try {String modifiedPath = this.ouputModifiedBitmap(bitmap, uri);// The modified image is cached by the app in order to get around this and not have to delete you// application cache I'm adding the current system time to the end of the file url.this.callbackContext.success("file://" + modifiedPath + "?" + System.currentTimeMillis());} catch (Exception e) {e.printStackTrace();this.failPicture("Error retrieving image.");}}else {Context context = this.webView.getContext().getApplicationContext();  //这里this.callbackContext.success(getPath(context, uri));}
}

4、记得在顶部导入包：

import android.annotation.SuppressLint;
import android.content.ContentUris;
import android.content.Context;
import android.os.Build;
import android.provider.DocumentsContract;

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