Android将镜像保存在sdcard中
Android将镜像保存在sdcard中
提问于 2014-03-04 13:32:37
我正在将图像保存到SD卡中，但我希望目录文件夹将自动显示在画廊中，并将图像显示在文件夹中。每当我保存图像时，我都会重新启动手机，以使目录文件夹显示在图库中。是我的代码有问题吗？还是手机？请帮帮我。非常感谢。我不知道该怎么办
下面是我的代码：
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());
}回答 3
Stack Overflow用户
发布于 2014-03-04 13:36:10
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;
}别忘了添加存储权限
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" />Stack Overflow用户
发布于 2014-03-04 13:41:50
试试看
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maniefest文件中添加权限
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />Stack Overflow用户
发布于 2014-03-04 14:19:32
问题不在于代码...
这里发生的事情是
下载SD卡上的文件后，在系统中添加或下载新文件时，不会通知图库
您需要做的是手动通知画廊添加了...okhay画廊文件，请显示..:)
为此，您必须使用MediaScannerConnection
下载文件，扫描特定的文件，它将显示在图库中
您就完成了：)
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/22163703
复制相关文章
相似问题
腾讯云开发者
