androidはバッテリーの電力量を表示します
原文導入:http://blog.csdn.net/it_farmer2010/article/details/6334051
大丈夫な时、もっと勉強して、毎日少し進歩して、自分がこの毎日変化している技術環境についていくようにして、あまり話さないで、コードをつけます.
直接コードをつけましょう.
そしてAndroidManifestでxmlはバッテリ検出権限を申請します.
最後に効果図を見てみましょう.
注:一番上のImageViewは、現在の電力検出とは異なり表示されている画像です.
大丈夫な时、もっと勉強して、毎日少し進歩して、自分がこの毎日変化している技術環境についていくようにして、あまり話さないで、コードをつけます.
直接コードをつけましょう.
package com.jli.battery;
import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.graphics.BitmapFactory;
import android.os.BatteryManager;
import android.os.Bundle;
import android.util.Log;
import android.widget.ArrayAdapter;
import android.widget.ImageView;
import android.widget.ListView;
public class Main extends Activity {
private ImageView tvBatteryChanged;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
tvBatteryChanged = (ImageView)findViewById(R.id.test);
//
registerReceiver(new BatteryBroadcastReceiver(), new IntentFilter(Intent.ACTION_BATTERY_CHANGED));
}
/** */
class BatteryBroadcastReceiver extends BroadcastReceiver{
int intLevel = 0;
int intScale = 0;
String BatteryV=null;//
String BatteryT=null;//
String BatteryStatus=null;//
String BatteryStatus2=null;//
String BatteryTemp=null; //
@Override
public void onReceive(Context context, Intent intent) {
if(intent.getAction().equals(Intent.ACTION_BATTERY_CHANGED)){
intLevel = intent.getIntExtra("level", 0);
intScale = intent.getIntExtra("scale", 100);
int curPower = (intLevel * 100 / intScale)/25;//
switch (curPower) {
case 0:
tvBatteryChanged.setImageBitmap(BitmapFactory.decodeResource(Main.this.getResources(), R.drawable.power0));
break;
case 1:
tvBatteryChanged.setImageBitmap(BitmapFactory.decodeResource(Main.this.getResources(), R.drawable.power1));
break;
case 2:
tvBatteryChanged.setImageBitmap(BitmapFactory.decodeResource(Main.this.getResources(), R.drawable.power2));
break;
case 3:
tvBatteryChanged.setImageBitmap(BitmapFactory.decodeResource(Main.this.getResources(), R.drawable.power3));
break;
case 4:
tvBatteryChanged.setImageBitmap(BitmapFactory.decodeResource(Main.this.getResources(), R.drawable.power4));
break;
}
String action = intent.getAction();
/*
* action ACTION_BATTERY_CHANGED, onBatteryInfoReceiver()
*/
if (Intent.ACTION_BATTERY_CHANGED.equals(action)) {
Log.d("Battery V", "" + intent.getIntExtra("voltage", 0)); //
Log.d("Battery T", "" + intent.getIntExtra("temperature", 0)); //
BatteryV = " :" + intent.getIntExtra("voltage", 0);
BatteryT = " :" + (intent.getIntExtra("temperature", 0)*0.1);
switch (intent.getIntExtra("status",BatteryManager.BATTERY_STATUS_UNKNOWN)) {
case BatteryManager.BATTERY_STATUS_CHARGING:
BatteryStatus = " ";
break;
case BatteryManager.BATTERY_STATUS_DISCHARGING:
BatteryStatus = " ";
break;
case BatteryManager.BATTERY_STATUS_NOT_CHARGING:
BatteryStatus = " ";
break;
case BatteryManager.BATTERY_STATUS_FULL:
BatteryStatus = " ";
break;
case BatteryManager.BATTERY_STATUS_UNKNOWN:
BatteryStatus = " ";
break;
}
switch (intent.getIntExtra("plugged", BatteryManager.BATTERY_PLUGGED_AC)) {
case BatteryManager.BATTERY_PLUGGED_AC:
BatteryStatus2 = "AC ";
break;
case BatteryManager.BATTERY_PLUGGED_USB:
BatteryStatus2 = "USB ";
break;
}
switch (intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN)) {
case BatteryManager.BATTERY_HEALTH_UNKNOWN:
BatteryTemp = " ";
break;
case BatteryManager.BATTERY_HEALTH_GOOD:
BatteryTemp = " ";
break;
case BatteryManager.BATTERY_HEALTH_DEAD:
BatteryTemp = " ";
break;
case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE:
BatteryTemp = " ";
break;
case BatteryManager.BATTERY_HEALTH_OVERHEAT:
BatteryTemp = " ";
break;
}
}
ListView lv = (ListView)findViewById(R.id.batteryListView);
String [] batterys={BatteryV,BatteryT," :"+BatteryStatus," :"+BatteryStatus2," :"+BatteryTemp};
lv.setAdapter(new ArrayAdapter(Main.this, android.R.layout.simple_list_item_1,batterys));
}
}
}
}
そしてAndroidManifestでxmlはバッテリ検出権限を申請します.
<uses-permission android:name="android.permission.BATTERY_STATS" />
最後に効果図を見てみましょう.
注:一番上のImageViewは、現在の電力検出とは異なり表示されている画像です.