Java tutorial
package mobi.cangol.mobile.uiframe.demo; /* * Copyright (C) 2014 Chris Renke * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import static android.view.Gravity.START; import android.app.Activity; import android.content.res.Resources; import android.os.Bundle; import android.support.v4.widget.DrawerLayout; import android.view.View; import android.widget.ImageView; import android.widget.TextView; public class Main2Activity extends Activity { private DrawerArrowDrawable drawerArrowDrawable; private float offset; private boolean flipped; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.home_view); final DrawerLayout drawer = (DrawerLayout) findViewById(R.id.drawer_layout); final ImageView imageView = (ImageView) findViewById(R.id.drawer_indicator); final Resources resources = getResources(); drawerArrowDrawable = new DrawerArrowDrawable(resources); drawerArrowDrawable.setStrokeColor(resources.getColor(R.color.light_gray)); imageView.setImageDrawable(drawerArrowDrawable); drawer.setDrawerListener(new DrawerLayout.SimpleDrawerListener() { @Override public void onDrawerSlide(View drawerView, float slideOffset) { offset = slideOffset; // Sometimes slideOffset ends up so close to but not quite 1 or // 0. if (slideOffset >= .995) { flipped = true; drawerArrowDrawable.setFlip(flipped); } else if (slideOffset <= .005) { flipped = false; drawerArrowDrawable.setFlip(flipped); } drawerArrowDrawable.setParameter(offset); } }); imageView.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { if (drawer.isDrawerVisible(START)) { drawer.closeDrawer(START); } else { drawer.openDrawer(START); } } }); final TextView styleButton = (TextView) findViewById(R.id.indicator_style); styleButton.setOnClickListener(new View.OnClickListener() { boolean rounded = false; @Override public void onClick(View v) { styleButton.setText(rounded // ? resources.getString(R.string.rounded) // : resources.getString(R.string.squared)); rounded = !rounded; drawerArrowDrawable = new DrawerArrowDrawable(resources, rounded); drawerArrowDrawable.setParameter(offset); drawerArrowDrawable.setFlip(flipped); drawerArrowDrawable.setStrokeColor(resources.getColor(R.color.light_gray)); imageView.setImageDrawable(drawerArrowDrawable); } }); } }