[英]How to upload image from gallery in android
我想將手機庫中的圖像上傳到我的應用程序中。在我的應用程序中有一個名為upload的按鈕。 當我點擊按鈕,它應該移動到畫廊和畫廊,如果我選擇圖像,所選圖像應該在應用程序中顯示為縮略圖。我想從我的應用程序中的庫中上傳10個圖像。
單擊圖庫按鈕,啟動startActivityForResult,如下所示:
startActivityForResult(new Intent(Intent.ACTION_PICK, android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI), GET_FROM_GALLERY);
因此,在onActivityResult中檢測GET_FROM_GALLERY(這是一個靜態int,您選擇的任何請求編號,例如, public static final int GET_FROM_GALLERY = 3;
)。
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
//Detects request codes
if(requestCode==GET_FROM_GALLERY && resultCode == Activity.RESULT_OK) {
Uri selectedImage = data.getData();
Bitmap bitmap = null;
try {
bitmap = MediaStore.Images.Media.getBitmap(this.getContentResolver(), selectedImage);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}
要查看圖庫:
Intent intent = new Intent();
intent.setType("image/*");
intent.setAction(Intent.ACTION_GET_CONTENT);
startActivityForResult(Intent.createChooser(intent, "Select Picture"),REQUEST_CODE);
並在您的應用程序中使用它:
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
try {
switch (requestCode) {
case REQUEST_CODE:
if (resultCode == Activity.RESULT_OK) {
//data gives you the image uri. Try to convert that to bitmap
break;
} else if (resultCode == Activity.RESULT_CANCELED) {
Log.e(TAG, "Selecting picture cancelled");
}
break;
}
} catch (Exception e) {
Log.e(TAG, "Exception in onActivityResult : " + e.getMessage());
}
}
這是要走的路:
startActivityForResult(
new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.INTERNAL_CONTENT_URI
),
GET_FROM_GALLERY
);
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