Merge "Update the collapsing toolbar layout" into sc-dev am: b0e554dc8f (29374ed5) · Commits · e / os / android_frameworks_base

packages/SettingsLib/CollapsingToolbarBaseActivity/res/values/dimens.xml

+5 −3

Original line number	Diff line number	Diff line
		@@ -16,10 +16,12 @@
		-->
		<resources>
		<!-- Collapsing toolbar layout dimensions -->
		<dimen name="toolbar_one_line_height">226dp</dimen>
		<dimen name="toolbar_two_lines_height">270dp</dimen>
		<dimen name="toolbar_three_lines_height">314dp</dimen>
		<dimen name="toolbar_one_line_height">216dp</dimen>
		<dimen name="toolbar_two_lines_height">260dp</dimen>
		<dimen name="toolbar_three_lines_height">304dp</dimen>
		<dimen name="scrim_visible_height_trigger">174dp</dimen>
		<dimen name="scrim_visible_height_trigger_two_lines">218dp</dimen>
		<dimen name="scrim_visible_height_trigger_three_lines">262dp</dimen>
		<dimen name="expanded_title_margin_start">24dp</dimen>
		<dimen name="expanded_title_margin_end">24dp</dimen>
		</resources>
		No newline at end of file

packages/SettingsLib/CollapsingToolbarBaseActivity/src/com/android/settingslib/collapsingtoolbar/AdjustableToolbarLayout.java

+9 −30

Original line number	Diff line number	Diff line
		@@ -26,12 +26,9 @@ import androidx.annotation.Nullable;

		import com.google.android.material.appbar.CollapsingToolbarLayout;

		import java.lang.reflect.Field;
		import java.lang.reflect.Method;

		/**
		* A customized version of CollapsingToolbarLayout that can apply different font size based on
		* the line count of its title.
		* A customized version of CollapsingToolbarLayout that can apply different font size based on the
		* line count of its title.
		*/
		public class AdjustableToolbarLayout extends CollapsingToolbarLayout {

		@@ -59,43 +56,25 @@ public class AdjustableToolbarLayout extends CollapsingToolbarLayout {
		public void onLayoutChange(View v, int left, int top, int right, int bottom,
		int oldLeft, int oldTop, int oldRight, int oldBottom) {
		v.removeOnLayoutChangeListener(this);
		final int count = getLineCountWithReflection();
		final int count = getLineCount();
		if (count > TOOLBAR_MAX_LINE_NUMBER) {
		final ViewGroup.LayoutParams lp = getLayoutParams();
		lp.height = getResources()
		.getDimensionPixelSize(R.dimen.toolbar_three_lines_height);
		setScrimVisibleHeightTrigger(
		getResources().getDimensionPixelSize(
		R.dimen.scrim_visible_height_trigger_three_lines));
		setLayoutParams(lp);
		} else if (count == TOOLBAR_MAX_LINE_NUMBER) {
		final ViewGroup.LayoutParams lp = getLayoutParams();
		lp.height = getResources()
		.getDimensionPixelSize(R.dimen.toolbar_two_lines_height);
		setScrimVisibleHeightTrigger(
		getResources().getDimensionPixelSize(
		R.dimen.scrim_visible_height_trigger_two_lines));
		setLayoutParams(lp);
		}
		}
		});
		}

		/**
		* Returns a number of title line count for CollapsingToolbarLayout so that facilitates the
		* determination to apply what kind of font size. Since the title of CollapsingToolbarLayout is
		* drawn in a canvas and the text process is wrapped in a CollapsingTextHelper, the way we used
		* here is to get the line count from the CollapsingTextHelper via Java Reflection.
		*/
		private int getLineCountWithReflection() {
		try {
		final Field textHelperField =
		this.getClass().getSuperclass().getDeclaredField("collapsingTextHelper");
		textHelperField.setAccessible(true);
		final Object textHelperObj = textHelperField.get(this);

		final Field layoutField = textHelperObj.getClass().getDeclaredField("textLayout");
		layoutField.setAccessible(true);
		final Object layoutObj = layoutField.get(textHelperObj);

		final Method method = layoutObj.getClass().getDeclaredMethod("getLineCount");
		return (int) method.invoke(layoutObj);
		} catch (Exception e) {
		return 0;
		}
		}
		}