[英]create image from gallery and create a folder
這個簡單的代碼要求用戶從圖庫中選擇圖像
private void openGallery() {
Intent gallery =
new Intent(Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI);
startActivityForResult(gallery, PICK_IMAGE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && requestCode == PICK_IMAGE) {
Uri imageUri = data.getData();
imageView.setImageURI(imageUri);
}
}
}
我的問題 :當用戶上傳圖片時,我看到許多代碼或應用程序都會創建一個文件夾。 我應該那樣做嗎? 以及如何使用上面的代碼創建文件夾
檢查以下代碼以動態創建文件夾。
String root = Environment.getExternalStorageDirectory()
.toString();
new File(root + "/" + Constants.IMAGE_DIRECTORY_NAME + "/"
+ Constants.SUB_DIRECTORY_NAME).mkdirs();
請為所選的圖庫圖像創建位圖文件,然后保存到自己創建的文件夾中。
File outputfile = new File(root + "/"
+ Constants.IMAGE_DIRECTORY_NAME + "/"
+ Constants.SUB_DIRECTORY_NAME + "/", "img_"
+ dateFormatter.format(new Date()).toString() + ".jpeg");
OutputStream outStream = null;
try {
outStream = new FileOutputStream(outputfile);
bmFrame.compress(Bitmap.CompressFormat.JPEG, 70, outStream);
} catch (FileNotFoundException e) {
e.printStackTrace();
Log.e(TAG, e.toString());
} finally {
try {
if (outStream != null) {
outStream.flush();
outStream.close();
bmFrame.recycle();
}
} catch (IOException e) {
e.printStackTrace();
}
}
}
在onActivityResult中使用以上代碼
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (resultCode == RESULT_OK && requestCode == PICK_IMAGE) {
Uri imageUri = data.getData();
imageView.setImageURI(imageUri);
Bitmap bmFrame = MediaStore.Images.Media.getBitmap(
this.getContentResolver(), imageUri);
//Add above code here.
}
}
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