手机卫士day11
来源：互联网 发布：中科院自动化所 知乎 编辑：程序博客网 时间：2024/06/05 03:19
day11
- 系统进程显示和隐藏 - 创建进程管理设置页面:ProcessManagerSettingActivity - 编写设置页面布局文件 - 监听Checkbox的勾选事件,更新本地SharePreference // 根据本地记录,更新checkbox状态 boolean showSystem = mPrefs.getBoolean("show_system_process", true); if (showSystem) { cbShowSystem.setChecked(true); cbShowSystem.setText("显示系统进程"); } else { cbShowSystem.setChecked(false); cbShowSystem.setText("不显示系统进程"); } // 设置状态勾选监听 cbShowSystem.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { if (isChecked) { cbShowSystem.setText("显示系统进程"); mPrefs.edit().putBoolean("show_system_process", true).commit(); } else { cbShowSystem.setText("不显示系统进程"); mPrefs.edit().putBoolean("show_system_process", false) .commit(); } } }); - 根据sp记录的是否显示系统进程,更新listview的显示个数 @Override public int getCount() { // 通过判断是否显示系统进程,更新list的数量 boolean showSystem = mPrefs.getBoolean("show_system_process", true); if (showSystem) { return 1 + mUserProcessList.size() + 1 + mSystemProcessList.size(); } else { return 1 + mUserProcessList.size(); } } - 保证勾选框改变后,listview可以立即刷新 public void setting(View view) { startActivityForResult(new Intent(this, ProcessManagerSettingActivity.class), 0); } @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { // 当从设置页面回跳回来之后,刷新listview mAdapter.notifyDataSetChanged(); }- 锁屏清理 - 演示金山进程管理效果 - 后台启动服务,监听广播 //判断锁屏清理的广播是否正在运行 boolean serviceRunning = ServiceStatusUtils.isServiceRunning( "com.itheima.mobilesafeteach.service.AutoKillService", this); if (serviceRunning) { cbLockClear.setChecked(true); cbLockClear.setText("当前状态:锁屏清理已经开启"); } else { cbLockClear.setChecked(false); cbLockClear.setText("当前状态:锁屏清理已经关闭"); } cbLockClear.setOnCheckedChangeListener(new OnCheckedChangeListener() { @Override public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) { Intent intent = new Intent(ProcessManagerSettingActivity.this, AutoKillService.class); if (isChecked) { // 启动锁屏清理的服务 startService(intent); cbLockClear.setText("当前状态:锁屏清理已经开启"); } else { // 关闭锁屏清理的服务 stopService(intent); cbLockClear.setText("当前状态:锁屏清理已经关闭"); } } }); ------------------------------------- /** * 锁屏清理进程的服务 * * @author Kevin * */ public class AutoKillService extends Service { private InnerScreenOffReceiver mReceiver; @Override public IBinder onBind(Intent intent) { return null; } @Override public void onCreate() { super.onCreate(); //监听屏幕关闭的广播, 注意,该广播只能在代码中注册,不能在清单文件中注册 mReceiver = new InnerScreenOffReceiver(); IntentFilter filter = new IntentFilter(); filter.addAction(Intent.ACTION_SCREEN_OFF); registerReceiver(mReceiver, filter); } @Override public void onDestroy() { super.onDestroy(); unregisterReceiver(mReceiver); mReceiver = null; } /** * 锁屏关闭的广播接收者 * * @author Kevin * */ class InnerScreenOffReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { System.out.println("屏幕关闭..."); // 杀死后台所有运行的进程 ActivityManager am = (ActivityManager) getSystemService(ACTIVITY_SERVICE); List<RunningAppProcessInfo> runningAppProcesses = am .getRunningAppProcesses(); for (RunningAppProcessInfo runningAppProcessInfo : runningAppProcesses) { // 跳过手机卫士的服务 if (runningAppProcessInfo.processName.equals(ctx.getPackageName())) { return; } am.killBackgroundProcesses(runningAppProcessInfo.processName); } } } }- 定时器清理(介绍) // 在AutoKillService的onCreate中启动定时器,定时清理任务 mTimer = new Timer(); mTimer.schedule(new TimerTask() { @Override public void run() { System.out.println("5秒运行一次!"); } }, 0, 5000); @Override protected void onDestroy() { super.onDestroy(); mTimer.cancel(); mTimer = null; }桌面Widget(窗口小部件)
- widget介绍(Android, 瑞星,早期word)
- widget谷歌文档查看(API Guide->App Components->App Widget)
widget开发流程
1. 在com.itheima.mobilesafe.receiver目录下创建MyWidget并且继承AppWidgetProvider2. 在功能清单文件注册，参照文档 <receiver android:name=".receiver.MyWidget" > <intent-filter> <action android:name="android.appwidget.action.APPWIDGET_UPDATE" /> </intent-filter> <meta-data android:name="android.appwidget.provider" android:resource="@xml/appwidget_info" /> </receiver>3. 在res/xml/创建文件example_appwidget_info.xml拷贝文档内容 <appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="294dp" android:minHeight="72dp"//能被调整的最小宽高，若大于minWidth minHeight 则忽略 android:updatePeriodMillis="86400000"//更新周期,毫秒,最短默认半小时 android:previewImage="@drawable/preview"//选择部件时 展示的图像,3.0以上使用,默认是ic_launcher android:initialLayout="@layout/example_appwidget"//布局文件 android:configure="com.example.android.ExampleAppWidgetConfigure"//添加widget之前,先跳转到配置的activity进行相关参数配置,这个我们暂时用不到 android:resizeMode="horizontal|vertical"//widget可以被拉伸的方向。horizontal表示可以水平拉伸，vertical表示可以竖直拉伸 android:widgetCategory="home_screen|keyguard"//分别在屏幕主页和锁屏状态也能显示(4.2+系统才支持) android:initialKeyguardLayout="@layout/example_keyguard"//锁屏状态显示的样式(4.2+系统才支持) > </appwidget-provider>4. 精简example_appwidget_info.xml文件,最终结果: <appwidget-provider xmlns:android="http://schemas.android.com/apk/res/android" android:minWidth="294dp" android:minHeight="72dp" android:updatePeriodMillis="1800000" android:initialLayout="@layout/appwidget" > </appwidget-provider>5. widget布局文件:appwidget.xml <?xml version="1.0" encoding="utf-8"?> <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:id="@+id/textView1" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="#f00" android:text="我是widget,哈哈哈" android:textSize="30sp" /> </LinearLayout>简单演示,高低版本对比
仿照金山widget效果, apktool反编译,抄金山布局文件(业内抄袭成风)
1. 反编译金山apk 使用apktool,可以查看xml文件内容 apktool d xxx.apk2. 在金山清单文件中查找 APPWIDGET_UPDATE, 找到widget注册的代码3. 拷贝金山widget的布局文件process_widget_provider.xml到自己的项目中4. 从金山项目中拷贝相关资源文件,解决报错 5. 运行,查看效果widget生命周期
/** * 窗口小部件widget * * @author Kevin * */public class MyWidget extends AppWidgetProvider { /** * widget的每次变化都会调用onReceive */ @Override public void onReceive(Context context, Intent intent) { super.onReceive(context, intent); System.out.println("MyWidget: onReceive"); } /** * 当widget第一次被添加时,调用onEnable */ @Override public void onEnabled(Context context) { super.onEnabled(context); System.out.println("MyWidget: onEnabled"); } /** * 当widget完全从桌面移除时,调用onDisabled */ @Override public void onDisabled(Context context) { super.onDisabled(context); System.out.println("MyWidget: onDisabled"); } /** * 新增widget时,或者widget更新时,调用onUpdate * 更新时间取决于xml中配置的时间,最短为半小时 */ @Override public void onUpdate(Context context, AppWidgetManager appWidgetManager, int[] appWidgetIds) { super.onUpdate(context, appWidgetManager, appWidgetIds); System.out.println("MyWidget: onUpdate"); } /** * 删除widget时,调onDeleted */ @Override public void onDeleted(Context context, int[] appWidgetIds) { super.onDeleted(context, appWidgetIds); System.out.println("MyWidget: onDeleted"); } /** * 当widget大小发生变化时,调用此方法 */ @Override public void onAppWidgetOptionsChanged(Context context, AppWidgetManager appWidgetManager, int appWidgetId, Bundle newOptions) { System.out.println("MyWidget: onAppWidgetOptionsChanged"); }}定时更新widget
问题: 我们需要通过widget实时显示当前进程数和可用内存,但widget最短也得半个小时才会更新一次, 如何才能间隔比较短的时间来及时更新?查看金山日志:当桌面有金山widget时, 金山会在后台启动service:ProcessService,并定时输出如下日志:03-29 08:43:03.070: D/MoSecurity.ProcessService(275): updateWidget该日志在锁屏状态下也一直输出.解决办法: 后台启动service,UpdateWidgetService, 并在service中启动定时器来控制widget的更新更新widget方法
/** * 定时更新widget的service * * @author Kevin * */public class UpdateWidgetService extends Service { private Timer mTimer; private AppWidgetManager mAWM; @Override public IBinder onBind(Intent intent) { return null; } @Override public void onCreate() { super.onCreate(); mAWM = AppWidgetManager.getInstance(this); // 启动定时器,每个5秒一更新 mTimer = new Timer(); mTimer.schedule(new TimerTask() { @Override public void run() { System.out.println("更新widget啦!"); updateWidget(); } }, 0, 5000); } /** * 更新widget */ private void updateWidget() { // 初始化远程的view对象 RemoteViews views = new RemoteViews(getPackageName(), R.layout.process_widget); views.setTextViewText(R.id.tv_running_processes, "正在运行的软件:" + ProcessInfoProvider.getRunningProcessNum(this)); views.setTextViewText( R.id.tv_memory_left, "可用内存:" + Formatter.formatFileSize(this, ProcessInfoProvider.getAvailMemory(this))); // 初始化组件 ComponentName provider = new ComponentName(this, MyWidget.class); // 更新widget mAWM.updateAppWidget(provider, views); } @Override public void onDestroy() { super.onDestroy(); mTimer.cancel(); mTimer = null; }}-----------------------------启动和销毁service的时机分析widget的声明周期,在onEnabled和onUpdate中启动服务, 在onDisabled中结束服务注意: APK安装在sd卡上，widget在窗口小部件列表里无法显示。 android:installLocation=”preferExternal”, 修改过来后，需要卸载，再去安装widget才生效；
点击事件处理
// 初始化延迟意图,pending是等待的意思Intent intent = new Intent(this, HomeActivity.class);PendingIntent pendingIntent = PendingIntent.getActivity(this, 0, intent, PendingIntent.FLAG_UPDATE_CURRENT);// 当点击widget布局时,跳转到主页面views.setOnClickPendingIntent(R.id.ll_root, pendingIntent);//当一键清理被点击是,发送广播,清理内存Intent btnIntent = new Intent();btnIntent.setAction("com.itheima.mobilesafeteach.KILL_ALL");PendingIntent btnPendingIntent = PendingIntent.getBroadcast(this, 0, btnIntent, PendingIntent.FLAG_UPDATE_CURRENT);views.setOnClickPendingIntent(R.id.btn_clear, btnPendingIntent);--------------------------- /** * 杀死后台进程的广播接受者 * 清单文件中配置action="com.itheima.mobilesafeteach.KILL_ALL" * * @author Kevin * */public class KillAllReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { System.out.println("kill all..."); // 杀死后台所有运行的进程 ProcessInfoProvider.killAll(context); }}--------------------------- <receiver android:name=".receiver.KillAllReceiver" > <intent-filter> <action android:name="com.itheima.mobilesafeteach.KILL_ALL" /> </intent-filter> </receiver>做一个有情怀的程序员, 拒绝耗电!
当锁屏关闭时,停止widget定时器的更新UpdateWidgetService:// 注册屏幕开启和关闭的广播接受者mReceiver = new InnerScreenReceiver();IntentFilter filter = new IntentFilter();filter.addAction(Intent.ACTION_SCREEN_OFF);filter.addAction(Intent.ACTION_SCREEN_ON);registerReceiver(mReceiver, filter);/** * 屏幕关闭和开启的广播接收者 * * @author Kevin * */class InnerScreenReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { String action = intent.getAction(); if (Intent.ACTION_SCREEN_OFF.equals(action)) {// 屏幕关闭 if (mTimer != null) { // 停止定时器 mTimer.cancel(); mTimer = null; } } else {// 屏幕开启 startTimer(); } }}
程序锁
- 高级工具中添加程序锁入口
- 新建程序锁页面 AppLockActivity
程序锁页面布局文件实现
activity_app_lock.xml<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <LinearLayout android:layout_width="match_parent" android:layout_height="wrap_content" android:gravity="center" android:orientation="horizontal" > <TextView android:id="@+id/tv_unlock" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/tab_left_pressed" android:gravity="center" android:text="未加锁" android:textColor="#fff" /> <TextView android:id="@+id/tv_locked" android:layout_width="wrap_content" android:layout_height="wrap_content" android:background="@drawable/tab_right_default" android:gravity="center" android:text="已加锁" android:textColor="#fff" /> </LinearLayout> <LinearLayout android:id="@+id/ll_unlock" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="未加锁软件:x个" android:textColor="#000" /> <ListView android:id="@+id/lv_unlock" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout> <LinearLayout android:id="@+id/ll_locked" android:layout_width="match_parent" android:layout_height="match_parent" android:orientation="vertical" android:visibility="gone" > <TextView android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="已加锁软件:x个" android:textColor="#000" /> <ListView android:id="@+id/lv_locked" android:layout_width="match_parent" android:layout_height="match_parent" /> </LinearLayout></LinearLayout>点击标签切换页面
@Overridepublic void onClick(View v) { switch (v.getId()) { case R.id.tv_unlock:// 展示未加锁页面,隐藏已加锁页面 llLocked.setVisibility(View.GONE); llUnlock.setVisibility(View.VISIBLE); tvUnlock.setBackgroundResource(R.drawable.tab_left_pressed); tvLocked.setBackgroundResource(R.drawable.tab_right_default); break; case R.id.tv_locked:// 展示已加锁页面,隐藏未加锁页面 llUnlock.setVisibility(View.GONE); llLocked.setVisibility(View.VISIBLE); tvUnlock.setBackgroundResource(R.drawable.tab_left_default); tvLocked.setBackgroundResource(R.drawable.tab_right_pressed); break; default: break; }}应用列表信息展现(展现全部应用列表数据)
使用数据库保存已加锁的软件
AppLockOpenHelper.java// 创建表, 两个字段,_id, packagename(应用包名)db.execSQL("create table applock (_id integer primary key autoincrement, packagename varchar(50))");----------------------------------AppLockDao.java(逻辑和黑名单列表类似)/** * 增加程序锁应用 */public void add(String packageName) { SQLiteDatabase db = mHelper.getWritableDatabase(); ContentValues values = new ContentValues(); values.put("packagename", packageName); db.insert("applock", null, values); db.close();}/** * 删除程序锁应用 * * @param number */public void delete(String packageName) { SQLiteDatabase db = mHelper.getWritableDatabase(); db.delete("applock", "packagename=?", new String[] { packageName }); db.close();}/** * 查找程序锁应用 * * @param number * @return */public boolean find(String packageName) { SQLiteDatabase db = mHelper.getWritableDatabase(); Cursor cursor = db.query("applock", null, "packagename=?", new String[] { packageName }, null, null, null); boolean result = false; if (cursor.moveToFirst()) { result = true; } cursor.close(); db.close(); return result;}/** * 查找已加锁列表 * * @return */public ArrayList<String> findAll() { SQLiteDatabase db = mHelper.getWritableDatabase(); Cursor cursor = db.query("applock", new String[] { "packagename" }, null, null, null, null, null); ArrayList<String> list = new ArrayList<String>(); while (cursor.moveToNext()) { String packageName = cursor.getString(0); list.add(packageName); } cursor.close(); db.close(); return list;}监听list item点击事件,向数据库添加一些数据
lvUnLock.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> parent, View view, int position, long id) { AppInfo info = mUnlockList.get(position); mDao.add(info.packageName); }});已加锁和未加锁数据设置
private ArrayList<AppInfo> mLockedList;// 已加锁列表集合private ArrayList<AppInfo> mUnlockList;// 未加锁列表集合private Handler mHandler = new Handler() { public void handleMessage(android.os.Message msg) { // 设置未加锁数据 mUnlockAdapter = new AppLockAdapter(false); lvUnLock.setAdapter(mUnlockAdapter); // 设置已加锁数据 mLockedAdapter = new AppLockAdapter(true); lvLocked.setAdapter(mLockedAdapter); };};/** * 初始化应用列表数据 */private void initData() { new Thread() { @Override public void run() { mList = AppInfoProvider.getAppInfos(AppLockActivity.this); mLockedList = new ArrayList<AppInfo>(); mUnlockList = new ArrayList<AppInfo>(); for (AppInfo info : mList) { boolean isLocked = mDao.find(info.packageName); if (isLocked) { mLockedList.add(info); } else { mUnlockList.add(info); } } mHandler.sendEmptyMessage(0); } }.start();}界面效果完善
点击锁子图标后, 实现加锁和去加锁的逻辑, 界面跟着更新class AppLockAdapter extends BaseAdapter { private boolean isLocked;//true表示已加锁数据 public AppLockAdapter(boolean isLocked) { this.isLocked = isLocked; } @Override public int getCount() { if (isLocked) { return mLockedList.size(); } else { return mUnlockList.size(); } } @Override public AppInfo getItem(int position) { if (isLocked) { return mLockedList.get(position); } else { return mUnlockList.get(position); } } @Override public long getItemId(int position) { return position; } @Override public View getView(final int position, View convertView, ViewGroup parent) { ViewHolder holder; if (convertView == null) { convertView = View.inflate(AppLockActivity.this, R.layout.list_applock_item, null); holder = new ViewHolder(); holder.ivIcon = (ImageView) convertView .findViewById(R.id.iv_icon); holder.tvName = (TextView) convertView .findViewById(R.id.tv_name); holder.ivLock = (ImageView) convertView .findViewById(R.id.iv_lock); convertView.setTag(holder); } else { holder = (ViewHolder) convertView.getTag(); } final AppInfo info = getItem(position); holder.ivIcon.setImageDrawable(info.icon); holder.tvName.setText(info.name); if(isLocked) { holder.ivLock.setImageResource(R.drawable.unlock); }else { holder.ivLock.setImageResource(R.drawable.lock); } holder.ivLock.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (isLocked) { mDao.delete(info.packageName);// 从数据库删除记录 mLockedList.remove(info);// 从已加锁集合删除元素 mUnlockList.add(info);// 给未加锁集合添加元素 } else { mDao.add(info.packageName);// 向数据库添加记录 mLockedList.add(info);// 给已加锁集合添加元素 mUnlockList.remove(info);// 从未加锁集合删除元素 } // 刷新listview mLockedAdapter.notifyDataSetChanged(); mUnlockAdapter.notifyDataSetChanged(); } }); return convertView; }}更新已加锁/未加锁数量
/** * 更新已加锁和未加锁数量 */private void updateAppNum() { tvUnLockNum.setText("未加锁软件:" + mUnlockList.size() + "个"); tvLockedNum.setText("已加锁软件:" + mLockedList.size() + "个");}// 每次刷新listview前都会调用getCount方法,可以在这里更新数量@Overridepublic int getCount() { updateAppNum(); if (isLocked) { return mLockedList.size(); } else { return mUnlockList.size(); }}动画实现
- 解决动画移动问题导致的原因，动画没有开始播放，界面就刷新了。动画播放需要时间的，动画没有播就变成了新的View对象。就播了新的View对象，让动画播放完后，再去更新页面；public AppLockAdapter(boolean isLocked) { this.isLocked = isLocked; // 右移 mLockAnim = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF, 1f, Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0); mLockAnim.setDuration(500); // 左移 mUnLockAnim = new TranslateAnimation(Animation.RELATIVE_TO_SELF, 0f, Animation.RELATIVE_TO_SELF, -1f, Animation.RELATIVE_TO_SELF, 0, Animation.RELATIVE_TO_SELF, 0); mUnLockAnim.setDuration(500);}holder.ivLock.setOnClickListener(new OnClickListener() { @Override public void onClick(View v) { if (isLocked) { view.startAnimation(mUnLockAnim); mUnLockAnim .setAnimationListener(new AnimationListener() { @Override public void onAnimationStart( Animation animation) { } @Override public void onAnimationRepeat( Animation animation) { } //监听动画结束事件 @Override public void onAnimationEnd( Animation animation) { mDao.delete(info.packageName);// 从数据库删除记录 mLockedList.remove(info);// 从已加锁集合删除元素 mUnlockList.add(info);// 给未加锁集合添加元素 // 刷新listview mLockedAdapter.notifyDataSetChanged(); mUnlockAdapter.notifyDataSetChanged(); } }); } else { view.startAnimation(mLockAnim); mLockAnim.setAnimationListener(new AnimationListener() { @Override public void onAnimationStart(Animation animation) { } @Override public void onAnimationRepeat(Animation animation) { } //监听动画结束事件 @Override public void onAnimationEnd(Animation animation) { mDao.add(info.packageName);// 向数据库添加记录 mLockedList.add(info);// 给已加锁集合添加元素 mUnlockList.remove(info);// 从未加锁集合删除元素 // 刷新listview mLockedAdapter.notifyDataSetChanged(); mUnlockAdapter.notifyDataSetChanged(); } }); } }});
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