Question

这是我在点击UI上的按钮时执行的功能＆amp;它在TextView上显示字符串str（充电状态）。

public void checkStatus (View view) {
    IntentFilter ifilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
    Context context = this;
    Intent batteryStatus = context.registerReceiver(null, ifilter);
    // Are we charging / charged?
    int status = batteryStatus.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
    boolean isCharging = status == BatteryManager.BATTERY_STATUS_CHARGING || status == BatteryManager.BATTERY_STATUS_FULL;

    int perc = batteryStatus.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);

    String str;
    if (perc == 100) {
        str = "Fully charged";
    } else if (isCharging) {
        str = "Charging";
    } else {
        str = "Not Charging";
    }

    TextView textview = (TextView) findViewById(R.id.textView);
    textview.setText(str);
}

现在我要做的是定期检查电池和电池。一旦它是100％（完全充电）然后调用一个函数，让我们称之为DiscntCharger（）

根据我的研究，我需要在这里使用IntentService来监控充电状态＆amp;一旦发现电池充满电，就需要在我的主要活动中调用该功能。但是，由于我对Android开发还很新，我无法理解如何实现它。

如果有人能指出我正确的方向，我真的很感激。

Answer 1

试试这个。在您的活动类中创建广播接收器并在电池充满时执行任何操作

private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver(){
    @Override
    public void onReceive(Context ctxt, Intent intent) {
      int level = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
      textview.setText(String.valueOf(level) + "%");
      //  do your stuff here
    }
  };

并在onCreate（）中注册广播类

registerReceiver(this.mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

Answer 2

Monitoring the Battery Level and Charging State

Answer 3

你需要写一个public static String URL = "jdbc:mysql://localhost/javaDb?allowMultiQueries=true";来实现你想要的。

在BroadcastReceiver
中添加接收器
```
AndroidManifest.xml
```
撰写<receiver android:name=".PowerConnectionReceiver"> <intent-filter> <action android:name="android.intent.action.ACTION_POWER_CONNECTED"/> <action android:name="android.intent.action.ACTION_POWER_DISCONNECTED"/> </intent-filter> </receiver>
```
BroadcastReceiver
```

在此处详细了解：Monitoring Device Battery Status

注意事项：使用Android O，您可能需要转到public class PowerConnectionReceiver extends BroadcastReceiver { @Override public void onReceive(Context context, Intent intent) { int status = intent.getIntExtra(BatteryManager.EXTRA_STATUS, -1); boolean isFull = status == BatteryManager.BATTERY_STATUS_FULL; // Do your job after checking for isFull } }或JobScheduler，因此请在此处阅读Background Services in Android O

Answer 4

您需要的是设置广播接收器。

https://developer.android.com/training/monitoring-device-state/battery-monitoring.html

如何检查电池何时100％充电？

4 个答案: