Android常亮设置以及读取电量

1.adnroid常亮设置

getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);

2.读电量的方式(广播方式实现)

[1]新建一个广播类去接收系统电池变化信息,在这里通过调用intent.getExtras()方法得到intent携带的Bundle集合
其中有当前电量字段”level”,总电量”scale”

package com.twei.battery;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.widget.TextView;/** * 监听获取手机系统剩余电量 * Created by Twei on 2017/3/14. */public class BatteryReceiver extends BroadcastReceiver {    private TextView pow;    public BatteryReceiver(TextView pow) {        this.pow = pow;    }    @Override    public void onReceive(Context context, Intent intent) {        int current = intent.getExtras().getInt("level");// 获得当前电量        int total = intent.getExtras().getInt("scale");// 获得总电量        int percent = current * 100 / total;        pow.setText(percent + "%");    }}

[2]在需要使用的activity动态注册广播监听电池电量变化

IntentFilter filter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);receiver = new BatteryReceiver(tvElectric);registerReceiver(receiver, filter);

[3]在销毁方法中注销监听广播

unregisterReceiver(receiver);

1.adnroid常亮设置

2.读电量的方式(广播方式实现)

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