java 低电量检测提示（机器人）

Posted 2021-05-08

摘要  Android通过StickyBroadcast进行低电量检测提示

逻辑不难，主要代码如下

 
         /** 
        
 
               
         * 通过粘性广播检测电量 
        
 
               
         */ 
        
 
              
         private  
         void  
         checkBattery() 
        
 
              
         { 
        
 
                  
         //通过粘性广播读取电量 
        
 
                  
         IntentFilter intentFilter =  
         new  
         IntentFilter(Intent.ACTION_BATTERY_CHANGED); 
        
 
                  
         Intent intentBattery = registerReceiver( 
         null 
         , intentFilter); 
         //注意，粘性广播不需要广播接收器 
        
 
                  
         if 
         (intentBattery!= 
         null 
         ) 
        
 
                  
         { 
        
 
                      
         //获取当前电量   
        
 
                      
         int  
         batteryLevel = intentBattery.getIntExtra( 
         "level" 
         ,  
         0 
         );   
        
 
                      
         //电量的总刻度   
        
 
                      
         int  
         batterySum = intentBattery.getIntExtra( 
         "scale" 
         ,  
         100 
         );   
        
 
                      
         float  
         rotatio =  
         100 
         *( 
         float 
         )batteryLevel/( 
         float 
         )batterySum; 
        
 
                      
         LogUtils.d( 
         "currentBattery=" 
         +rotatio+ 
         "%" 
         ); 
        
 
                      
         if 
         (rotatio< 
         15 
         ) 
        
 
                      
         { 
        
 
                          
         getWindow().getDecorView().postDelayed( 
         new  
         Runnable() { 
        
 
                              
         @Override 
        
 
                              
         public  
         void  
         run() { 
        
 
                                  
         showAlertToastTip(getString(R.string.common_low_batter)); 
        
 
                              
         } 
        
 
                          
         },  
         100 
         ); 
        
 
                      
         } 
        
 
                  
         } 
        
 
              
         } 
        
 
              
         /** 
        
 
               
         * 显示警告提示 
        
 
               
         * @param msg 
        
 
               
         */ 
        
 
              
         private  
         void  
         showAlertToastTip(String msg) 
        
 
              
         { 
        
 
                  
         TextView msgTv =  
         null 
         ; 
        
 
                  
         Toast toast =  
         null 
         ; 
        
 
                  
         toast =  
         new  
         Toast( 
         this 
         ); 
        
 
                  
         toast.setDuration(Toast.LENGTH_SHORT); 
        
 
                  
         toast.setGravity(Gravity.TOP | Gravity.FILL_HORIZONTAL,  
         0 
         ,  
         0 
         ); 
        

            
        
 
                  
         View toastView = LayoutInflater.from( 
         this 
         ).inflate( 
        
 
                              
         R.layout.common_simple_toast_layout,  
         null 
         ); 
        
 
                  
         msgTv = (TextView) toastView.findViewById(R.id.common_toast_text_tv); 
        
 
                  
         toastView.setTag(msgTv); 
        
 
                  
         toast.setView(toastView); 
        
 
                  
         msgTv.setText(msg); 
        
 
                  
         toast.show(); 
        
 
              
         }