我有一个phonegap照片库应用程序,可以选择将图像下载到设备。
目前,我可以将图像保存到设备的SD卡中,但它们不会显示在设备的照片库/图库应用程序中。
以下是我正在使用的代码:
var remoteFile = encodeURI($("#imageView_content").find("img").attr("src"));
var localFileName = remoteFile.substring(remoteFile.lastIndexOf('/') + 1);
var downloadSuccess = function() {
alert("Download sucessful!\nFile Saved at: " + localFileName);
};
var handleDownloadedFile = function(entry) {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, downloadSuccess, fail);
};
var startFileTransfer = function(fileEntry) {
var localPath = fileEntry.fullPath;
var ft = new FileTransfer();
ft.download(remoteFile, localPath, handleDownloadedFile, fail);
};
var createLocalFile = function(dir) {
dir.getFile(localFileName, {
create : true,
exclusive : false
}, startFileTransfer, fail);
};
var createPhotosDir = function(fileSys) {
fileSys.root.getDirectory("myAppName", {
create : true,
exclusive : false
}, createLocalFile, fail);
};
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, createPhotosDir, fail);
我正在使用https://build.phonegap.com来构建应用
更新
我正在尝试使用取决于设备的路径,但这似乎不起作用:
file:///private/var/root/Media/DCIM/100APPLE/myApp/
dcim/myApp/
file:///SDCard/BlackBerry/pictures/myApp/
,首先尝试file:///store/home/user/pictures/myApp/
这是设备检测代码:
var platform = (device.platform || navigator.userAgent).toLowerCase();
if (platform.match(/iphone/i) || platform.match(/ipad/i) || platform.match(/ios/i)) {
window.resolveLocalFileSystemURI("file:///private/var/root/Media/DCIM/100APPLE/", createPhotosDir_fromDir, callPhotosDir);
} else if (platform.match(/blackberry/i) || navigator.userAgent.toLowerCase().match(/blackberry/i)) {
window.resolveLocalFileSystemURI("file:///SDCard/BlackBerry/pictures/", createPhotosDir_BB, callPhotosDir);
} else if (platform.match(/android/i)) {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, createPhotosDir_Droid, callPhotosDir);
} else {
callPhotosDir();
}
以下是目录选择功能:
var callPhotosDir = function() {
window.requestFileSystem(LocalFileSystem.PERSISTENT, 0, createPhotosDir, fail);
};
var createPhotosDir_fromDir = function(dir) {
dir.getDirectory("myApp", {
create : true,
exclusive : false
}, createLocalFile, callPhotosDir);
};
var createPhotosDir_Droid = function(fileSys) {
fileSys.root.getDirectory("dcim/myApp", {
create : true,
exclusive : false
}, createLocalFile, callPhotosDir);
};
var createPhotosDir_BB = function(dir) {
dir.getDirectory("myApp", {
create : true,
exclusive : false
}, createLocalFile, function() {
window.resolveLocalFileSystemURI("file:///store/home/user/pictures/", createPhotosDir_fromDir, callPhotosDir);
});
};
答案 0 :(得分:2)
将它们保存到SD卡上的正确位置。 BlackBerry设备将SDCard安装在/ SDCard,因此完整路径为/SDCard/BlackBerry/pictures/
您还可以在图片目录中创建一个子目录,该目录可以在从照片库应用程序查看时整理照片。
设备也有内置存储设备,但容量远远低于大多数SDCard。要在那里保存图片,请使用路径/store/home/user/pictures/
答案 1 :(得分:1)
当你关闭或停止你的应用程序时,你应该调用这个方法。这对我和4.4以及较低的android sdk版本都有用。
import android.media.MediaScannerConnection;
public void addImageIntoGallery() {
String version = Build.VERSION.RELEASE;
if(! version.contains("4.4")){
Intent mediaScanIntent = new Intent(Intent.ACTION_MEDIA_MOUNTED);
String mCurrentPhotoPath = "file://" + Environment.getExternalStorageDirectory()+"/myDirectory";
File file = new File(mCurrentPhotoPath);
Uri contentUri = Uri.fromFile(file);
mediaScanIntent.setData(contentUri);
sendBroadcast(mediaScanIntent);
}else{
MediaScannerConnection.scanFile(this, new String[] { Environment.getExternalStorageDirectory().toString() }, null, new MediaScannerConnection.OnScanCompletedListener() {
public void onScanCompleted(String path, Uri uri)
{
Log.i("ExternalStorage", "Scanned " + path + ":");
Log.i("ExternalStorage", "-> uri=" + uri);
Log.i(TAG, "Scanned ................" + path);
}
});
}
}
@Override
protected void onPause() {
addImageIntoGallery();
super.onPause();
}