[英]Android Read Jpeg from internal Storage memory
我將位圖圖像保存到android內部存儲中。 現在,我想檢索此圖像/myphoto.jpg並使用shareIntent共享它。 我如何從內部存儲器讀取myphoto.jpg。 理想情況下,我希望獲得文件路徑。
ByteArrayOutputStream outputBuffer = new ByteArrayOutputStream();
bm.compress(Bitmap.CompressFormat.JPEG, 100, outputBuffer);
byte[] byteImage1=outputBuffer.toByteArray();
//save file to internal storage
FileOutputStream outputStream;
try {
outputStream = context.openFileOutput("myphoto.jpg", Context.MODE_PRIVATE);
outputStream.write(byteImage1);
outputStream.close();
} catch (Exception e) {
e.printStackTrace();
}
您可以使用以下代碼從sdcard中獲取所有圖像:
FileFilter filterForImageFolders = new FileFilter()
{
public boolean accept(File folder)
{
try
{
//Checking only directories, since we are checking for files within
//a directory
if(folder.isDirectory())
{
File[] listOfFiles = folder.listFiles();
if (listOfFiles == null) return false;
//For each file in the directory...
for (File file : listOfFiles)
{
//Check if the extension is one of the supported filetypes
//imageExtensions is a String[] containing image filetypes (e.g. "png")
for (String ext : imageExtensions)
{
if (file.getName().endsWith("." + ext)) return true;
}
}
}
return false;
}
catch (SecurityException e)
{
Log.v("debug", "Access Denied");
return false;
}
}
};
現在使用這種方法:
File extStore = Environment.getExternalStorageDirectory();
File[] imageDirs = extStore.listFiles(filterForImageFolders);
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