本文實例講述了android電源信息查看方法。分享給大家供大家參考。具體如下：
1. PowerTestActivity：
import android.app.Activity;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.content.IntentFilter;import android.os.BatteryManager;import android.os.Bundle;import android.os.PowerManager;import android.view.View;import android.widget.CheckBox;import android.widget.TextView;import java.text.DateFormat;import java.util.Date;/** * So you thought sync used up your battery life. */public class PowerTestActivity extends Activity { TextView mLog; DateFormat mDateFormat; IntentFilter mFilter; PowerManager.WakeLock mWakeLock; SpinThread mThread; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); // Set the layout for this activity. You can find it // in res/layout/hello_activity.xml setContentView(R.layout.main); findViewById(R.id.checkbox).setOnClickListener(mClickListener); mLog = (TextView)findViewById(R.id.log); mDateFormat = DateFormat.getInstance(); mFilter = new IntentFilter(); mFilter.addAction(Intent.ACTION_BATTERY_CHANGED); mFilter.addAction(Intent.ACTION_BATTERY_LOW); mFilter.addAction(Intent.ACTION_BATTERY_OKAY); mFilter.addAction(Intent.ACTION_POWER_CONNECTED); PowerManager pm = (PowerManager)getSystemService(POWER_SERVICE); mWakeLock = pm.newWakeLock(PowerManager.FULL_WAKE_LOCK, "BatteryWaster"); mWakeLock.setReferenceCounted(false); } @Override public void onPause() { stopRunning(); } View.OnClickListener mClickListener = new View.OnClickListener() { public void onClick(View v) { CheckBox checkbox = (CheckBox)v; if (checkbox.isChecked()) { startRunning(); } else { stopRunning(); } } }; void startRunning() { log("Start"); registerReceiver(mReceiver, mFilter); mWakeLock.acquire(); if (mThread == null) { mThread = new SpinThread(); mThread.start(); } } void stopRunning() { log("Stop"); unregisterReceiver(mReceiver); mWakeLock.release(); if (mThread != null) { mThread.quit(); mThread = null; } } void log(String s) { mLog.setText(mLog.getText() + "/n" + mDateFormat.format(new Date()) + ": " + s); } BroadcastReceiver mReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { StringBuffer sb = new StringBuffer(); String action = intent.getAction(); /* * 如果捕捉到的action是ACTION_BATTERY_CHANGED， 就運行onBatteryInfoReceiver() */ if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { sb.append("/n當前電量:").append(intent.getIntExtra("level", 0)); sb.append("/n電池電量:").append(intent.getIntExtra("scale", 100)); // 電池伏數 sb.append("/n當前電壓：").append(intent.getIntExtra("voltage", 0)); // 電池溫度 sb.append("/n當前溫度：").append( intent.getIntExtra("temperature", 0)); String BatteryStatus = null; switch (intent.getIntExtra("status", BatteryManager.BATTERY_STATUS_UNKNOWN)) { case BatteryManager.BATTERY_STATUS_CHARGING: BatteryStatus = "充電狀態"; break; case BatteryManager.BATTERY_STATUS_DISCHARGING: BatteryStatus = "放電狀態"; break; case BatteryManager.BATTERY_STATUS_NOT_CHARGING: BatteryStatus = "未充電"; break; case BatteryManager.BATTERY_STATUS_FULL: BatteryStatus = "充滿電"; break; case BatteryManager.BATTERY_STATUS_UNKNOWN: BatteryStatus = "未知道狀態"; break; } sb.append("/n當前狀態：").append(BatteryStatus); String BatteryStatus2 = null; switch (intent.getIntExtra("plugged", BatteryManager.BATTERY_PLUGGED_AC)) { case BatteryManager.BATTERY_PLUGGED_AC: BatteryStatus2 = "AC充電"; break; case BatteryManager.BATTERY_PLUGGED_USB: BatteryStatus2 = "USB充電"; break; } sb.append("/n充電方式：").append(BatteryStatus2); String BatteryTemp = null; switch (intent.getIntExtra("health", BatteryManager.BATTERY_HEALTH_UNKNOWN)) { case BatteryManager.BATTERY_HEALTH_UNKNOWN: BatteryTemp = "未知錯誤"; break; case BatteryManager.BATTERY_HEALTH_GOOD: BatteryTemp = "狀態良好"; break; case BatteryManager.BATTERY_HEALTH_DEAD: BatteryTemp = "電池沒有電"; break; case BatteryManager.BATTERY_HEALTH_OVER_VOLTAGE: BatteryTemp = "電池電壓過高"; break; case BatteryManager.BATTERY_HEALTH_OVERHEAT: BatteryTemp = "電池過熱"; break; } sb.append("/n電池狀態：").append(BatteryTemp); log(sb.toString()); } } }; class SpinThread extends Thread { private boolean mStop; public void quit() { synchronized (this) { mStop = true; } } public void run() { while (true) { synchronized (this) { if (mStop) { return; } } } } }}2. main.xml：
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="fill_parent" ><CheckBox android:id="@+id/checkbox" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="25dp" android:layout_marginTop="25dp" android:textSize="18sp" android:textColor="#ffffffff" android:text="電源測試" /> <ScrollView android:id="@+id/scroll" android:layout_width="fill_parent" android:layout_height="0px" android:layout_weight="1" > <TextView android:id="@+id/log" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="25dp" android:textSize="12sp" android:textColor="#ffffffff" /> </ScrollView></LinearLayout>
3. AndroidManifest.xml：
<?xml version="1.0" encoding="utf-8"?><manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.lenovo.android" android:versionCode="1" android:versionName="1.0"> <uses-sdk android:minSdkVersion="8" /> <application android:icon="@drawable/icon" android:label="@string/app_name"> <activity android:name=".PowerTestActivity" android:label="@string/app_name"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> <uses-permission android:name="android.permission.WAKE_LOCK" /> <uses-permission android:name="android.permission.DEVICE_POWER" /></manifest>
希望本文所述對大家的Android程序設計有所幫助。
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