ishandutta2007 ishandutta2007 - 3 years ago 218
Android Question

How can I do I set style for Button in code using theme (not drawable)?

I had a static button which I had to change to code but when I changed it and specified the same theme in code by

R.style.ThemeOverlay_MyDarkButton

I found that no style is getting applied.

So I changed the following

<LinearLayout
android:id="@+id/buttons_pane"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3.0">
<Button
android:id="@+id/button_start_verification"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_weight="1.0"
android:text="@string/start_phone_auth"
android:theme="@style/ThemeOverlay.MyDarkButton"/>
</LinearLayout>


and

mStartButton = (Button) findViewById(R.id.button_start_verification);


to

<LinearLayout
android:id="@+id/buttons_pane"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:weightSum="3.0">
</LinearLayout>


and

LinearLayout buttons_pane = findViewById(R.id.buttons_pane);
mStartButton = new Button(this, null, R.style.ThemeOverlay_MyDarkButton);
mStartButton.setText(R.string.start_phone_auth);
mStartButton.setLayoutParams(new LinearLayout.LayoutParams(0, LayoutParams.WRAP_CONTENT, 1.0f));
mStartButton.setId(R.id.button_start_verification);
buttons_pane.addView(mStartButton);


PS: I am aware of the way to set style using an drawable xml as background image
(Android Button Styling Programmatically) but my question is how can I do it using theme

Answer Source

Your button's style and theme are two different things. The button you are creating programmatically is more like setting

    style="@style/ThemeOverlay.MyDarkButton"

rather than the

    android:theme="@style/ThemeOverlay.MyDarkButton"

that you want.

You can apply a theme programmatically by using a ContextThemeWrapper.

    Context themedContext = new ContextThemeWrapper(this,
            R.style.ThemeOverlay_MyDarkButton);
    mStartButton = new Button(themedContext);
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