IT/Android

android - 배터리 상태 체크, BroadcastReceiver, onReceive

노마드오브 2018. 11. 11. 01:00
package com.example.it.myapplication14_2;

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.AppCompatActivity;
import android.os.Bundle;
import android.widget.EditText;
import android.widget.ImageView;

public class MainActivity extends AppCompatActivity {
ImageView ivBattery;
EditText edtBattery;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("배터리 상태 체크");

ivBattery = (ImageView) findViewById(R.id.ivBattery);
edtBattery = (EditText) findViewById(R.id.edtBattery);
}

@Override
protected void onPause() {
super.onPause();
unregisterReceiver(br);
}

@Override
protected void onResume() {
super.onResume();
IntentFilter iFilter = new IntentFilter();
iFilter.addAction(Intent.ACTION_BATTERY_CHANGED);
registerReceiver(br, iFilter);
}

BroadcastReceiver br = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
String action = intent.getAction();

if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {
int remain = intent.getIntExtra(BatteryManager.EXTRA_LEVEL, 0);
edtBattery.append("현재 충전량 : " + remain + "%\n");

if (remain >= 90) {
ivBattery.setImageResource(R.drawable.battery_100);
} else if (remain >= 70) {
ivBattery.setImageResource(R.drawable.battery_80);
} else if (remain >= 50) {
ivBattery.setImageResource(R.drawable.battery_60);
} else if (remain >= 10) {
ivBattery.setImageResource(R.drawable.battery_20);
} else {
ivBattery.setImageResource(R.drawable.battery_0);
}

int plug = intent.getIntExtra(BatteryManager.EXTRA_PLUGGED, 0);
switch (plug) {
case 0 :
edtBattery.append("전원 연결 : 안됨");
break;
case BatteryManager.BATTERY_PLUGGED_AC :
edtBattery.append("전원 연결 : 어댑터 연결됨");
break;
case BatteryManager.BATTERY_PLUGGED_USB :
edtBattery.append("전원 연결 : USB 연결됨");
break;
}

}
}

};

}


<?xml version="1.0" encoding="utf-8"?>
<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" >

<ImageView
android:id="@+id/ivBattery"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:src="@drawable/ic_launcher_background" />
<EditText
android:id="@+id/edtBattery"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#cccccc"
android:enabled="false" />

</LinearLayout>