How to change some default style of the android Views

In this blog,
I will show you how to change some default style of android Views by programmatically.

How to change the style of RatingBar using PorterDuff

In XML

<RatingBar

android:id="@+id/ratingBar"

style="?android:attr/ratingBarStyleSmall"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="start"

android:gravity="center" />

In java

RatingBar ratingBar = (RatingBar) convertView.findViewById(R.id.ratingBar);

LayerDrawable stars = (LayerDrawable) ratingBar.getProgressDrawable();

stars.getDrawable(2).setColorFilter(getResources().getColor(R.color.accent_color), PorterDuff.Mode.SRC_ATOP);

getDrawable(index): Returns the drawable for the layer at the specified index.

Parameters index
The index of the layer must be in the range 0…getNumberOfLayers()-1.

PorterDuff.Mode.SRC_ATOP:

Consider these two images:

The effect is as if the destination image is trimmed to match the source image, and then held up in front of it:

The Porter/Duff operator that does this is called “Dest Atop”.

How to change the color of title divider blue line in Dialog

In this example, I have created a default Dialog view and change the blue line title divider in Dialog.

This is simple dialog,

Dialog dialog = new Dialog(ViewProductSimple.this);

dialog.setContentView(R.layout.custom_dialog);

dialog.setTitle("Custom Dialog");

dialog.show();

and change the title divider blue line,

int divierId = dialog.getContext().getResources()

.getIdentifier("android:id/titleDivider", null, null);

View divider = dialog.findViewById(divierId);

divider.setBackgroundColor(getResources().getColor(R.color.line_color));

and custom_dialog.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

android:layout_width="fill_parent"

android:layout_height="fill_parent"

android:background="@color/background_color"

android:orientation="vertical">

<TextView

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:clickable="true"

android:text="My Custom Dialog!!"

android:textColor="@color/green_font_color"

android:textStyle="bold" />

<LinearLayout

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:layout_gravity="right"

android:orientation="horizontal"

android:paddingBottom="10dp"

android:paddingTop="5dp">

<TextView

android:id="@+id/btn_cancel"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:clickable="true"

android:text="CANCEL"

android:textColor="@color/green_font_color"

android:textStyle="bold" />

<View

android:layout_width="30dp"

android:layout_height="match_parent"></View>

<TextView

android:id="@+id/btn_apply"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:clickable="true"

android:text="SUBMIT"

android:textColor="@color/green_font_color"

android:textStyle="bold" />

</LinearLayout>

Aman Gupta 12 March 2016

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How to change some default style of the android Views

How to change the style of RatingBar using PorterDuff

How to change the color of title divider blue line in Dialog

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