package com.example.androidbattery;
import android.support.v7.app.ActionBarActivity;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.TextView;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.BatteryManager;
import android.os.Bundle;
public class MainActivity extends ActionBarActivity {
Button btnReadBattery;
TextView textBatteryStatus;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
btnReadBattery = (Button)findViewById(R.id.readbattery);
textBatteryStatus = (TextView)findViewById(R.id.batterystatus);
btnReadBattery.setOnClickListener(new OnClickListener(){
@Override
public void onClick(View v) {
textBatteryStatus.setText(readBattery());
}});
}
private String readBattery(){
StringBuilder sb = new StringBuilder();
IntentFilter batteryIntentFilter = new IntentFilter(Intent.ACTION_BATTERY_CHANGED);
Intent batteryIntent = registerReceiver(null, batteryIntentFilter);
int status = batteryIntent.getIntExtra(BatteryManager.EXTRA_STATUS, -1);
if(status == BatteryManager.BATTERY_STATUS_CHARGING){
sb.append("BATTERY_STATUS_CHARGING\n");
}
if(status == BatteryManager.BATTERY_STATUS_FULL){
sb.append("BATTERY_STATUS_FULL\n");
}
int plugged = batteryIntent.getIntExtra(BatteryManager.EXTRA_PLUGGED, -1);
if(plugged == BatteryManager.BATTERY_PLUGGED_USB){
sb.append("BATTERY_PLUGGED_USB\n");
}
if(plugged == BatteryManager.BATTERY_PLUGGED_AC){
sb.append("BATTERY_PLUGGED_AC\n");
}
int level = batteryIntent.getIntExtra(BatteryManager.EXTRA_LEVEL, -1);
sb.append("level: " + level + "\n");
int scale = batteryIntent.getIntExtra(BatteryManager.EXTRA_SCALE, -1);
sb.append("scale: " + scale + "\n");
return sb.toString();
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.androidbattery.MainActivity" >
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:autoLink="web"
android:text="http://android-er.blogspot.com/"
android:textStyle="bold" />
<Button
android:id="@+id/readbattery"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Read Battery" />
<TextView
android:id="@+id/batterystatus"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</LinearLayout>
Next:
- Get battery information using BatteryManager
