Android电池充电显示数据

爱被打了一巴掌 2022-06-09 13:21 252阅读 0赞

今天给自己的手机充电，老是判断是交流电充电还是USB充电，于是想做个APP显示充电时的数据，不说了，直接上代码。

package com.example.powerbattery;
    
    import android.app.Activity;
    import android.content.Context;
    import android.content.Intent;
    import android.content.IntentFilter;
    import android.os.BatteryManager;
    import android.os.Bundle;
    import android.support.design.widget.FloatingActionButton;
    import android.support.design.widget.Snackbar;
    import android.support.v7.app.AppCompatActivity;
    import android.support.v7.widget.Toolbar;
    import android.view.View;
    import android.view.Menu;
    import android.view.MenuItem;
    import android.widget.TextView;
    
    public class MainActivity extends Activity {
    
        private TextView t1;
        String plug;
        @Override
        protected void onCreate(Bundle savedInstanceState) {
            super.onCreate(savedInstanceState);
            setContentView(R.layout.activity_main);
    
            t1 = (TextView)findViewById(R.id.tx1);
    
            IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
            Intent batteryStatus = registerReceiver(null, ifilter);
    
            // 是否在充电
            int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
            boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING||
                    status == BatteryManager.BATTERY_STATUS_FULL;
    
            // 怎么充
            int chargePlug = batteryStatus.getIntExtra(BatteryManager.EXTRA_PLUGGED,-1);
    
            boolean usbCharge = chargePlug == BatteryManager.BATTERY_PLUGGED_USB;
            boolean acCarge =chargePlug == BatteryManager.BATTERY_PLUGGED_AC;
            if(chargePlug == BatteryManager.BATTERY_PLUGGED_USB){
                plug = "USB";
            }else if(chargePlug == BatteryManager.BATTERY_PLUGGED_AC){
                plug = "交流电";
            }
    
            //当前剩余电量
            int level = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
            //电量最大值
            int scale = batteryStatus.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
        //    Double i = batteryStatus.getDoubleExtra(BatteryManager.EXTRA_SCALE, -1);
            //电量百分比
            float batteryPct = level / (float)scale;
    
            int temperature= batteryStatus.getIntExtra(BatteryManager.EXTRA_TEMPERATURE, 0);
            // integer containing the current battery voltage level.
            int voltage = batteryStatus.getIntExtra(BatteryManager.EXTRA_VOLTAGE,0);
    
            int health = batteryStatus.getIntExtra(BatteryManager.EXTRA_HEALTH,0);
            String healthStr = "";
            switch (health){
                case BatteryManager.BATTERY_HEALTH_COLD:
                    healthStr="cold";
                    break;
                case BatteryManager.BATTERY_HEALTH_DEAD:
                    healthStr="dead";
                    break;
                case BatteryManager.BATTERY_HEALTH_GOOD:
                    healthStr="good";
                    break;
                case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
                    healthStr="voer voltage";
                    break;
                case BatteryManager.BATTERY_HEALTH_UNKNOWN:
                    healthStr="unknown";
                    break;
                case BatteryManager.BATTERY_HEALTH_UNSPECIFIED_FAILURE:
                    healthStr="unspecified failure";
                    break;
            }
    
            t1.setText("是否在充电：" + isCharging);
            t1.append("\n是否USB充电：" + usbCharge);
            t1.append("\n是否交流电充电：" + acCarge);
            t1.append("\n充电方式：" + plug);
            t1.append("\n电量百分比：" + (batteryPct * 100) + "%");
            t1.append("\n电池状态:"+healthStr);
            t1.append("\n电池温度:"+temperature);
            t1.append("\n电池电压:"+voltage);
    
        }
    
    }

结果图:  
![这里写图片描述][SouthEast]

[SouthEast]: /images/20220609/cf3cbf512d79408cb0512aca32bad739.png