Fix windowSoftInputMode=“adjustResize” not working when activity is full screen

attrs.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  
    <declare-styleable name="FitsSystemWindowsFrameLayout">
        <attr name="consume_system_windows">
            <flag name="left" value="0x0001"/>
            <flag name="top" value="0x0002"/>
            <flag name="right" value="0x0004"/>
            <flag name="bottom" value="0x0008"/>
        </attr>
    </declare-styleable>

</resources>

FitsSystemWindowsFrameLayout.java

/**
 * A kind of FrameLayout which enable {@code fitsSystemWindows} and can only consume specific directions.
 */
public class FitsSystemWindowsFrameLayout extends FrameLayout {
    private static final String TAG = FitsSystemWindowsFrameLayout.class.getSimpleName();

    private static final int FLAG_CONSUME_SYSTEM_WINDOWS_LEFT = 0x0001;
    private static final int FLAG_CONSUME_SYSTEM_WINDOWS_TOP = 0x0002;
    private static final int FLAG_CONSUME_SYSTEM_WINDOWS_RIGHT = 0x0004;
    private static final int FLAG_CONSUME_SYSTEM_WINDOWS_BOTTOM = 0x0008;

    private boolean mConsumeSystemWindowInsetLeft;
    private boolean mConsumeSystemWindowInsetTop;
    private boolean mConsumeSystemWindowInsetRight;
    private boolean mConsumeSystemWindowInsetBottom;

    public FitsSystemWindowsFrameLayout(Context context) {
        this(context, null);
    }

    public FitsSystemWindowsFrameLayout(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public FitsSystemWindowsFrameLayout(Context context, AttributeSet attrs, int defStyle) {
        super(context, attrs, defStyle);

        TypedArray typedArray = context.obtainStyledAttributes(attrs, R.styleable.FitsSystemWindowsFrameLayout);

        int consumeSystemWindowInsetFlag = typedArray.getInt(R.styleable.FitsSystemWindowsFrameLayout_consume_system_windows, 0);
        mConsumeSystemWindowInsetLeft = (consumeSystemWindowInsetFlag & FLAG_CONSUME_SYSTEM_WINDOWS_LEFT) == FLAG_CONSUME_SYSTEM_WINDOWS_LEFT;
        mConsumeSystemWindowInsetTop = (consumeSystemWindowInsetFlag & FLAG_CONSUME_SYSTEM_WINDOWS_TOP) == FLAG_CONSUME_SYSTEM_WINDOWS_TOP;
        mConsumeSystemWindowInsetRight = (consumeSystemWindowInsetFlag & FLAG_CONSUME_SYSTEM_WINDOWS_RIGHT) == FLAG_CONSUME_SYSTEM_WINDOWS_RIGHT;
        mConsumeSystemWindowInsetBottom = (consumeSystemWindowInsetFlag & FLAG_CONSUME_SYSTEM_WINDOWS_BOTTOM) == FLAG_CONSUME_SYSTEM_WINDOWS_BOTTOM;

        typedArray.recycle();
    }

    @Override
    public WindowInsets onApplyWindowInsets(WindowInsets insets) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            // Create a new WindowInsets, which only retain the directions we want to handle,
            // and put back to super method.
            return super.onApplyWindowInsets(insets.replaceSystemWindowInsets(
                    mConsumeSystemWindowInsetLeft ? insets.getSystemWindowInsetLeft() : 0,
                    mConsumeSystemWindowInsetTop ? insets.getSystemWindowInsetTop() : 0,
                    mConsumeSystemWindowInsetRight ? insets.getSystemWindowInsetRight() : 0,
                    mConsumeSystemWindowInsetBottom ? insets.getSystemWindowInsetBottom() : 0));
        } else {
            return super.onApplyWindowInsets(insets);
        }
    }
}