我将图像保存到SD卡中,但我希望目录文件夹会自动显示在图库中,文件夹上的图像也会显示。每当我保存图像时,我都会重新启动手机,以便在库中显示目录文件夹。是我的代码有问题吗?还是电话?请帮我。非常感谢。我不知道该怎么做
这是我的代码:
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date());
mTempDir = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES) + "/" + "PixiePhotos" + "/";
prepareDirectory();
save.setOnClickListener(new View.OnClickListener() {
@SuppressLint("ShowToast")
@SuppressWarnings("deprecation")
public void onClick(View v) {
Log.v(TAG, "Save Tab Clicked");
viewBitmap = Bitmap.createBitmap(500, 500, Bitmap.Config.ARGB_8888);
canvas = new Canvas(viewBitmap);
tapimageview.draw(canvas);
canvas.drawBitmap(bp, 0, 0, paint);
canvas.drawBitmap(drawingBitmap, matrix, paint);
canvas.drawBitmap(bmpstickers, matrix, paint);
//tapimageview.setImageBitmap(mBitmapDrawable.getBitmap());
try {
mBitmapDrawable = new BitmapDrawable(viewBitmap);
mCurrent = "PXD_" + new SimpleDateFormat("yyyyMMdd_HHmmss",
Locale.getDefault()).format(new Date()) + ".jpg";
bp1 = mBitmapDrawable.getBitmap();
tapimageview.setImageBitmap(bp1);
mNewSaving = ((BitmapDrawable) mBitmapDrawable).getBitmap();
String FtoSave = mTempDir + mCurrent;
File mFile = new File(FtoSave);
mFileOutputStream = new FileOutputStream(mFile);
mNewSaving.compress(CompressFormat.JPEG, 100, mFileOutputStream);
mFileOutputStream.flush();
mFileOutputStream.close();
} catch (FileNotFoundException e) {
Log.v(TAG, "FileNotFoundExceptionError " + e.toString());
} catch (IOException e) {
Log.v(TAG, "IOExceptionError " + e.toString());
}
Toast.makeText(getApplicationContext(), "Your photo has been saved", Toast.LENGTH_LONG).show();
}
});
}
private boolean prepareDirectory() {
try {
if (makeDirectory()) {
return true;
} else {
return false;
}
} catch (Exception e) {
e.printStackTrace();
//Toast.makeText(this, getString(R.string.sdcard_error), 1000).show();
return false;
}
}
private boolean makeDirectory() {
File mTempFile = new File(mTempDir);
if (!mTempFile.exists()) {
mTempFile.mkdirs();
}
if (mTempFile.isDirectory()) {
File[] mFiles = mTempFile.listFiles();
for (File mEveryFile : mFiles) {
if (!mEveryFile.delete()) {
//System.out.println(getString(R.string.failed_to_delete) + mEveryFile);
}
}
}
return (mTempFile.isDirectory());
}
答案 0 :(得分:0)
试试这个:
private boolean storeImage(Bitmap imageData, String filename) {
//get path to external storage (SD card)
String iconsStoragePath = Environment.getExternalStorageDirectory() + "/myAppDir/myImages/"
File sdIconStorageDir = new File(iconsStoragePath);
//create storage directories, if they don't exist
sdIconStorageDir.mkdirs();
try {
String filePath = sdIconStorageDir.toString() + filename;
FileOutputStream fileOutputStream = new FileOutputStream(filePath);
BufferedOutputStream bos = new BufferedOutputStream(fileOutputStream);
//choose another format if PNG doesn't suit you
imageData.compress(CompressFormat.PNG, 100, bos);
bos.flush();
bos.close();
} catch (FileNotFoundException e) {
Log.w("TAG", "Error saving image file: " + e.getMessage());
return false;
} catch (IOException e) {
Log.w("TAG", "Error saving image file: " + e.getMessage());
return false;
}
return true;
}
不要忘记添加存储空间权限
由于这是将数据保存在外部存储器上的操作,因此需要AndroidManifest.xml
权限:
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
答案 1 :(得分:0)
尝试一下
void saveImage() {
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/saved_images");
String fname = "Image.jpg";
File file = new File (myDir, fname);
if (file.exists ()) file.delete ();
try {
FileOutputStream out = new FileOutputStream(file);
myBitmap.compress(Bitmap.CompressFormat.JPEG, 90, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
}
并在清单文件中添加权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
答案 2 :(得分:0)
问题不在于代码...
这里发生的事情是
在SD卡上下载文件后,不会通过添加或下载到系统的新文件通知图库
你需要做的是你必须手动通知画廊...添加了okhay画廊文件请显示.. :)
为此你必须使用MediaScannerConnection
下载文件,扫描特定文件,它将显示在图库中
你完成了:)