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- package com.basillee.asus.demo;
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- import android.app.Notification;
- import android.content.BroadcastReceiver;
- import android.content.Context;
- import android.content.Intent;
- import android.content.IntentFilter;
- import android.os.BatteryManager;
- import android.support.v7.app.ActionBarActivity;
- import android.os.Bundle;
- import android.view.Menu;
- import android.view.MenuItem;
- import android.view.View;
- import android.widget.Button;
- import android.widget.TextView;
-
-
- public class MainActivity11 extends ActionBarActivity {
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- private TextView textViewLevel=null;
- private int batteryLevel;
- private int batteryScale;
- private Button buttonBatteryShow;
- private BroadcastReceiver broadcastReceiver=new BroadcastReceiver() {
- @Override
- public void onReceive(Context context, Intent intent) {
- //获取当前电量,如未获取具体数值,则默认为0
- batteryLevel=intent.getIntExtra(BatteryManager.EXTRA_LEVEL,0);
- //获取最大电量,如未获取到具体数值,则默认为100
- batteryScale=intent.getIntExtra(BatteryManager.EXTRA_SCALE,100);
- //显示电量
- textViewLevel.setText("电量"+(batteryLevel*100/batteryScale)+"%");
- }
- };
- @Override
- protected void onCreate(Bundle savedInstanceState) {
- super.onCreate(savedInstanceState);
- setContentView(R.layout.activity_main_activity11);
- textViewLevel= (TextView) findViewById(R.id.textViewBattery);
- buttonBatteryShow= (Button) findViewById(R.id.button_show_battery);
- buttonBatteryShow.setOnClickListener(new View.OnClickListener() {
- @Override
- public void onClick(View v) {
- IntentFilter intentFilter=new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
- //注册接收器以获取电量信息
- registerReceiver(broadcastReceiver, intentFilter);
- }
- });
- }
-
- }
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