import com.gordonwong.materialsheetfab.MaterialSheetFabEventListener; //导入依赖的package包/类
/**
 * Sets up the Floating action button.
 */
private void setupFab() {

	Fab fab = (Fab) findViewById(R.id.fab);
	View sheetView = findViewById(R.id.fab_sheet);
	View overlay = findViewById(R.id.overlay);
	int sheetColor = getResources().getColor(R.color.background_card);
	int fabColor = getResources().getColor(R.color.theme_accent);

	// Create material sheet FAB
	materialSheetFab = new MaterialSheetFab<>(fab, sheetView, overlay, sheetColor, fabColor);

	// Set material sheet event listener
	materialSheetFab.setEventListener(new MaterialSheetFabEventListener() {
		@Override
		public void onShowSheet() {
			// Save current status bar color
			statusBarColor = getStatusBarColor();
			// Set darker status bar color to match the dim overlay
			setStatusBarColor(getResources().getColor(R.color.theme_primary_dark2));
		}

		@Override
		public void onHideSheet() {
			// Restore status bar color
			setStatusBarColor(statusBarColor);
		}
	});

	// Set material sheet item click listeners
	findViewById(R.id.fab_sheet_item_recording).setOnClickListener(this);
	findViewById(R.id.fab_sheet_item_reminder).setOnClickListener(this);
	findViewById(R.id.fab_sheet_item_photo).setOnClickListener(this);
	findViewById(R.id.fab_sheet_item_note).setOnClickListener(this);
}