Android Loading Bitmaps Effectively edit

Load the Image from Resource from Android Device. Using Intents.

Using Intents to Load the Image from Gallery.

  1. Initially you need to have the permission
  2. Use the Following Code to have the layout as designed follows.
 
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
 xmlns:tools="http://schemas.android.com/tools"
 android:orientation="vertical"
 android:layout_width="match_parent"
 android:layout_height="match_parent"
 android:paddingBottom="@dimen/activity_vertical_margin"
 android:paddingLeft="@dimen/activity_horizontal_margin"
 android:paddingRight="@dimen/activity_horizontal_margin"
 android:paddingTop="@dimen/activity_vertical_margin"
 tools:context="androidexamples.idevroids.loadimagefrmgallery.MainActivity">

 <ImageView
     android:id="@+id/imgView"
     android:layout_width="fill_parent"
     android:layout_height="wrap_content"
     android:layout_weight="1"
     android:background="@color/abc_search_url_text_normal"></ImageView>

 <Button
     android:id="@+id/buttonLoadPicture"
     android:layout_width="wrap_content"
     android:layout_height="wrap_content"
     android:layout_weight="0"
     android:text="Load Picture"
     android:layout_gravity="bottom|center"></Button>

</LinearLayout>
  1. Use the Following code to Display the image with button Click.

Button Click will be

Button loadImg = (Button) this.findViewById(R.id.buttonLoadPicture);
loadImg.setOnClickListener(new View.OnClickListener() {
    @Override
    public void onClick(View v) {

        Intent i = new Intent(Intent.ACTION_PICK, MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
        startActivityForResult(i, RESULT_LOAD_IMAGE);
    }
});
  1. Once you clicked on the button , it will open the gallery with help of intent.

You need to select image and send it back to main activity. Here with help of onActivityResult we can do that.

protected void onActivityResult(int requestCode, int resultCode, Intent data)  {
    super.onActivityResult(requestCode, resultCode, data);

    if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
        Uri selectedImage = data.getData();
        String[] filePathColumn = { MediaStore.Images.Media.DATA };

        Cursor cursor = getContentResolver().query(selectedImage,
                filePathColumn, null, null, null);
        cursor.moveToFirst();

        int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
        String picturePath = cursor.getString(columnIndex);
        cursor.close();

        ImageView imageView = (ImageView) findViewById(R.id.imgView);
        imageView.setImageBitmap(BitmapFactory.decodeFile(picturePath));

    }
}
Loading Bitmaps Effectively/
Loading Bitmaps Effectively
Load the Image from Resource from Android Device. Using Intents.

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39 ACRA
64 Menu
112 Loader
119 Xposed
132 Colors
135 Fresco
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147 Button
156 Vk SDK
170 XMPP
176 OpenCV
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203 Moshi
217 Paint
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241 JCodec
243 Okio
255 Looper
266 Loading Bitmaps Effectively
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