Java tutorial
/* * Copyright (C) 2014 Lemon Labs * * 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. */ package co.lemonlabs.android.slidingdebugmenu; import android.content.Context; import android.content.Intent; import android.content.pm.ApplicationInfo; import android.content.pm.ResolveInfo; import android.net.Uri; import android.provider.Settings; import android.support.v4.widget.DrawerLayout; import android.util.AttributeSet; import android.view.Gravity; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.widget.ImageView; import android.widget.LinearLayout; import android.widget.RelativeLayout; import android.widget.TextView; import android.widget.Toast; import co.lemonlabs.android.slidingdebugmenu.modules.MenuModule; import co.lemonlabs.android.slidingdebugmenu.views.ModuleTitle; import java.util.ArrayList; import java.util.HashMap; import java.util.List; import java.util.Map; public class SlidingDebugMenu extends RelativeLayout implements View.OnClickListener { private static final String TAG = "SlidingDebugMenu"; public static SlidingDebugMenu create(Context context, List<MenuModule> modules) { SlidingDebugMenu sdm = (SlidingDebugMenu) LayoutInflater.from(context).inflate(R.layout.sdm__drawer, null); for (MenuModule module : modules) { sdm.addModule(module); } return sdm; } /** * Root layout of the menu */ private ViewGroup mContainer; /** * Drawer settings layout */ private View mDrawerSettings; /** * Drawer subtitle */ private TextView mDrawerSubtitle; /** * List of currently added and visible modules */ private List<MenuModule> mModules; /** * Map of modules to their views in the menu */ private Map<MenuModule, ModuleViewHolder> mModuleViews; public SlidingDebugMenu(Context context, AttributeSet attrs) { super(context, attrs); mModules = new ArrayList<>(); mModuleViews = new HashMap<>(); DrawerLayout.LayoutParams params = new DrawerLayout.LayoutParams(context, attrs); params.gravity = Gravity.RIGHT; setLayoutParams(params); } @Override protected void onFinishInflate() { super.onFinishInflate(); mContainer = (ViewGroup) findViewById(R.id.sdm__drawer_container); mDrawerSettings = findViewById(R.id.sdm__drawer_settings); mDrawerSubtitle = (TextView) findViewById(R.id.sdm__drawer_title_description); // Set drawer title icon and name final ApplicationInfo appInfo = getContext().getApplicationInfo(); ((ImageView) findViewById(R.id.sdm__drawer_title_icon)) .setImageDrawable(appInfo.loadIcon(getContext().getPackageManager())); ((TextView) findViewById(R.id.sdm__drawer_title)).setText(appInfo.labelRes); // Init drawer settings findViewById(R.id.sdm__settings_developer).setOnClickListener(this); findViewById(R.id.sdm__settings_battery).setOnClickListener(this); findViewById(R.id.sdm__settings_drawer).setOnClickListener(this); findViewById(R.id.sdm__settings_uninstall).setOnClickListener(this); findViewById(R.id.sdm__settings_app_info).setOnClickListener(this); } /** * Add a new module to the end of the menu * * @param module module to add */ public void addModule(MenuModule module) { addModule(mModules.size(), module); } /** * Add a new module at the specified position of the menu * * @param position the index at which to insert * @param module module to add */ public void addModule(int position, MenuModule module) { mModules.add(position, module); // drawer has a title view and each module has 2 views mModuleViews.put(module, addModuleViews(module, position * 2 + 1)); } /** * Add module title and content to drawer layout at the given index * of the container and return a wrapper of the views * * @param module module to get views from * @param index position of view root at which to insert * @return */ private ModuleViewHolder addModuleViews(MenuModule module, int index) { LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(ViewGroup.LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.WRAP_CONTENT); final int botMargin = (int) getResources().getDimension(R.dimen.sdm__module_subtitle_margin); final int topMargin = (int) getResources().getDimension(R.dimen.sdm__drawer_module_margin); params.setMargins(0, topMargin, 0, botMargin); ModuleTitle title = new ModuleTitle(getContext(), module.getTitle()); View content = module.getContent(getContext()); mContainer.addView(title, index, params); mContainer.addView(content, index + 1); return new ModuleViewHolder(title, content); } /** * Remove a module from the menu * * @param module module to remove */ public void removeModule(MenuModule module) { if (mModules.remove(module)) { ModuleViewHolder holder = mModuleViews.get(module); mContainer.removeView(holder.title); mContainer.removeView(holder.content); module.onStop(); } } /** * Remove a module from the menu by its position * * @param position the index which is to be removed */ public void removeModule(int position) { MenuModule module = mModules.get(position); if (mModules.remove(module)) { ModuleViewHolder holder = mModuleViews.get(module); mContainer.removeView(holder.title); mContainer.removeView(holder.content); module.onStop(); } } /** * Set visibility of drawer settings at the bottom of the menu * * @param visible */ public void setDrawerSettingsVisible(boolean visible) { mDrawerSettings.setVisibility(visible ? VISIBLE : GONE); } /** * Set drawer subtitle * * @param text */ public void setDrawerSubtitle(String text) { mDrawerSubtitle.setText(text); } /** * Get a list of currently loaded and visible modules * * @return */ public List<MenuModule> getLoadedModules() { return mModules; } /** * Get a module by its position in the menu * * @param position * @return */ public MenuModule getModule(int position) { return mModules.get(position); } /** * Get first occurrence of a module by given class. Returns null otherwise. * * @param moduleClass instance of module to look for * @return */ public MenuModule getModule(Class<? extends MenuModule> moduleClass) { for (MenuModule module : mModules) { if (moduleClass.isInstance(module)) return module; } return null; } /** * Removes all modules and calls their {@link MenuModule#onStop()} method */ public void onStop() { for (MenuModule module : mModules) { module.onStop(); } } /** * Starts all modules and calls their {@link MenuModule#onStart()} method */ public void onStart() { for (MenuModule module : mModules) { module.onStart(); } } @SuppressWarnings("ConstantConditions") @Override public void onClick(View v) { final int id = v.getId(); Context context = getContext(); if (id == R.id.sdm__settings_developer) { // open dev settings Intent devIntent = new Intent(Settings.ACTION_APPLICATION_DEVELOPMENT_SETTINGS); ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(devIntent, 0); if (resolveInfo != null) context.startActivity(devIntent); else Toast.makeText(context, "Developer settings not available on device", Toast.LENGTH_SHORT).show(); } else if (id == R.id.sdm__settings_battery) { // try to find an app to handle battery settings Intent batteryIntent = new Intent(Intent.ACTION_POWER_USAGE_SUMMARY); ResolveInfo resolveInfo = context.getPackageManager().resolveActivity(batteryIntent, 0); if (resolveInfo != null) context.startActivity(batteryIntent); else Toast.makeText(context, "No app found to handle power usage intent", Toast.LENGTH_SHORT).show(); } else if (id == R.id.sdm__settings_drawer) { // open android settings context.startActivity(new Intent(Settings.ACTION_SETTINGS)); } else if (id == R.id.sdm__settings_app_info) { Intent intent = new Intent(Settings.ACTION_APPLICATION_DETAILS_SETTINGS); intent.setData(Uri.parse("package:" + context.getPackageName())); context.startActivity(intent); } else if (id == R.id.sdm__settings_uninstall) { // open dialog to uninstall app Uri packageURI = Uri.parse("package:" + context.getPackageName()); Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI); context.startActivity(uninstallIntent); } } /** * Holder for module views */ public static class ModuleViewHolder { public final ModuleTitle title; public final View content; public ModuleViewHolder(ModuleTitle title, View content) { this.title = title; this.content = content; } } }