Android 电量显示Widgets插件源码-IT计算机-毕业设计.zip

package com.ritterliu.newBatteryWidget; import android.app.AlarmManager; import android.app.PendingIntent; import android.app.Service; import android.appwidget.AppWidgetManager; import android.appwidget.AppWidgetProvider; import android.content.BroadcastReceiver; import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.os.IBinder; import android.util.Log; import android.widget.RemoteViews; import android.widget.Toast; public class NewBatteryWidget extends AppWidgetProvider{ private static int currentBatteryLevel; private static int currentBatteryStatus; private static boolean firstTimeToCreate=true; public void onUpdate(Context context,AppWidgetManager appWidgetManager,int[] appWidgetIds) { super.onUpdate(context, appWidgetManager, appWidgetIds); /** 启动自动更新电池信息的service */ context.startService(new Intent(context,updateService.class)); /** 为AppWidget设置点击事件的响应，启动显示电池信息详情的activity */ Intent startActivityIntent = new Intent(context,NewBatteryInfoActivity.class); PendingIntent Pintent = PendingIntent.getActivity(context,0,startActivityIntent,0); RemoteViews views = new RemoteViews(context.getPackageName(),R.layout.newrelativelayout); views.setOnClickPendingIntent(R.id.imageView,Pintent); appWidgetManager.updateAppWidget(appWidgetIds,views); } /** 自动更新电池信息的service,通过AlarmManager实现定时不间断地发送电池信息 */ public static class updateService extends Service{ Bitmap bmp; //定义机器人图片 @Override public IBinder onBind(Intent intent) { // TODO Auto-generated method stub return null; } /** 定义一个接收电池信息的broascastReceiver */ private BroadcastReceiver batteryReceiver=new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub currentBatteryLevel=intent.getIntExtra("level", 0); currentBatteryStatus=intent.getIntExtra("status", 0); } }; private BroadcastReceiver powerConnectedReceiver=new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub setViews(); } }; private BroadcastReceiver powerDisconnectedReceiver=new BroadcastReceiver() { @Override public void onReceive(Context context, Intent intent) { // TODO Auto-generated method stub setViews(); } }; /** 设置Widget的显示 */ private void setViews() { /** 定义一个AppWidgetManager */ AppWidgetManager manager=AppWidgetManager.getInstance(this); /** 定义一个RemoteViews，实现对AppWidget界面控制 */ RemoteViews views=new RemoteViews(getPackageName(),R.layout.newrelativelayout); if(currentBatteryStatus==2||currentBatteryStatus==5) //当正在充电或充满电时，显示充电的图片 { if(currentBatteryLevel>=95) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.jcharge); } else if(currentBatteryLevel>=85&& currentBatteryLevel<95) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.icharge); } else if(currentBatteryLevel>=75&& currentBatteryLevel<85) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.hcharge); } else if(currentBatteryLevel>=65&& currentBatteryLevel<75) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.gcharge); } else if(currentBatteryLevel>=55&& currentBatteryLevel<65) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.fcharge); } else if(currentBatteryLevel>=45&& currentBatteryLevel<55) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.echarge); } else if(currentBatteryLevel>=35&& currentBatteryLevel<45) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.dcharge); } else if(currentBatteryLevel>=25&& currentBatteryLevel<35) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.ccharge); } else if(currentBatteryLevel>=15&& currentBatteryLevel<25) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.bcharge); } else { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.acharge); } } else //未在充电时，显示不在充电状态的系列图片 { if(currentBatteryLevel>=95) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.j); } else if(currentBatteryLevel>=85&& currentBatteryLevel<95) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.i); } else if(currentBatteryLevel>=75&& currentBatteryLevel<85) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.h); } else if(currentBatteryLevel>=65&& currentBatteryLevel<75) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.g); } else if(currentBatteryLevel>=55&& currentBatteryLevel<65) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.f); } else if(currentBatteryLevel>=45&& currentBatteryLevel<55) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.e); } else if(currentBatteryLevel>=35&& currentBatteryLevel<45) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.d); } else if(currentBatteryLevel>=25&& currentBatteryLevel<35) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.c); } else if(currentBatteryLevel>=15&& currentBatteryLevel<25) { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.b); } else { bmp=BitmapFactory.decodeResource(getResources(),R.drawable.a); } } /** 设置AppWidget上显示的图片和文字的内容 */ views.setImageViewBitmap(R.id.imageView,bmp); views.setTextViewText(R.id.tv,currentBatteryLevel+"%"); ComponentName thisWidget=new ComponentName(this,NewBatteryWidget.class); /** 更新AppWidget */ manager.updateAppWidget(thisWidget, views); } public void onStart(Intent intent,int startId) { super.onStart(intent, startId); /** 注册接收器 */ registerReceiver(batteryReceiver,new IntentFilter(Intent.ACTION_BATTERY_CHANGED)); /** 增加了对于POWER_CONNECTED和DISCONNECTED事件的监听， * 以实现充电时信息的动态变化，避免了原来需要依赖AlarmManager * 每隔一秒发送检测信息来实现，节约了电量，用原来隔一秒更新的方法， * 经过一夜测试，插件耗电量居然占到了8%，汗。。。 * * */ registerReceiver(powerConnectedReceiver,new IntentFilter(Intent.ACTION_POWER_CONNECTED)); registerReceiver(powerDisconnectedReceiver,new IntentFilter(Intent.ACTION_POWER_DISCONNECTED )); /** 使用AlarmManager实现，第一次启动Widget时隔一秒立即更新， * 以后均为一分钟发送一次更新提示信息，实现信息实时动态变化， * 实现节电功能 * */ long now=System.currentTimeMillis(); long pause; if(firstTimeToCreate) { firstTimeToCreate=false; pause=1000; } else { pause=1000*60*2; } Intent alarmIntent=new Intent(); alarmIntent=intent; PendingIntent pendingIntent=PendingIntent.getService(this, 0, alarmIntent, 0); AlarmManager alarm=(AlarmManager)getSystemService(Context.ALARM_SERVICE); alarm.set(AlarmManager.RTC_WAKEUP,now+pause,pendingIntent); setViews(); } } }