android开发分享Android拍照保存在系统相册不显示的问题解决方法

代码如下:

mediastore.images.media.insertimage(getcontentresolver(), mbitmap, “”, “”);

代码如下:

/**
* insert an image and create a thumbnail for it.
*
* @param cr the content resolver to use
* @param source the stream to use for the image
* @param title the name of the image
* @param description the description of the image
* @return the url to the newly created image, or null if the image failed to be stored
* for any reason.
*/
public static final string insertimage(contentresolver cr, bitmap source,
string title, string description) {
contentvalues values = new contentvalues();
values.put(images.media.title, title);
values.put(images.media.description, description);
values.put(images.media.mime_type, “image/jpeg”);
uri url = null;
string stringurl = null; /* value to be returned */
try {
url = cr.insert(external_content_uri, values);
if (source != null) {
outputstream imageout = cr.openoutputstream(url);
try {
source.compress(bitmap.compressformat.jpeg, 50, imageout);
} finally {
imageout.close();
}
long id = contenturis.parseid(url);
// wait until mini_kind thumbnail is generated.
bitmap minithumb = images.thumbnails.getthumbnail(cr, id,
images.thumbnails.mini_kind, null);
// this is for backward compatibility.
bitmap microthumb = storethumbnail(cr, minithumb, id, 50f, 50f,
images.thumbnails.micro_kind);
} else {
log.e(tag, “failed to create thumbnail, removing original”);
cr.delete(url, null, null);
url = null;
}
} catch (exception e) {
log.e(tag, “failed to insert image”, e);
if (url != null) {
cr.delete(url, null, null);
url = null;
}
}
if (url != null) {
stringurl = url.tostring();
}
return stringurl;
}

代码如下:

/**
* insert an image and create a thumbnail for it.
*
* @param cr the content resolver to use
* @param imagepath the path to the image to insert
* @param name the name of the image
* @param description the description of the image
* @return the url to the newly created image
* @throws filenotfoundexception
*/
public static final string insertimage(contentresolver cr, string imagepath,
string name, string description) throws filenotfoundexception {
// check if file exists with a fileinputstream
fileinputstream stream = new fileinputstream(imagepath);
try {
bitmap bm = bitmapfactory.decodefile(imagepath);
string ret = insertimage(cr, bm, name, description);
bm.recycle();
return ret;
} finally {
try {
stream.close();
} catch (ioexception e) {
}
}
}

代码如下:

sendbroadcast(new intent(intent.action_media_mounted, uri.parse(“file://”+ environment.getexternalstoragedirectory())));

代码如下:

intent intent = new intent(intent.action_media_scanner_scan_file);
uri uri = uri.fromfile(new file(“/sdcard/image.jpg”));
intent.setdata(uri);
mcontext.sendbroadcast(intent);

代码如下:

final mediascannerconnection msc = new mediascannerconnection(mcontext, new mediascannerconnectionclient() {
public void onmediascannerconnected() {
msc.scanfile(“/sdcard/image.jpg”, “image/jpeg”);
}
public void onscancompleted(string path, uri uri) {
log.v(tag, “scan completed”);
msc.disconnect();
}
});

代码如下:

private string getfilepathbycontentresolver(context context, uri uri) {
if (null == uri) {
return null;
}
cursor c = context.getcontentresolver().query(uri, null, null, null, null);
string filepath = null;
if (null == c) {
throw new illegalargumentexception(
“query on ” + uri + ” returns null result.”);
}
try {
if ((c.getcount() != 1) || !c.movetofirst()) {
} else {
filepath = c.getstring(
c.getcolumnindexorthrow(mediacolumns.data));
}
} finally {
c.close();
}
return filepath;
}