Android broadcast电池电量显示源码.zip

package com.test; import android.app.Activity; import android.app.Dialog; import android.content.BroadcastReceiver; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; import android.os.Bundle; import android.view.View; import android.view.Window; import android.view.WindowManager; import android.widget.Button; import android.widget.TextView; public class Broadcast extends Activity { private int intLevel; private int intScale; private Button mButton01; public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); mButton01 = (Button) findViewById(R.id.myButton1); mButton01.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { //注册一个系统 BroadcastReceiver，作为访问电池计量之用 registerReceiver(batInfoReceiver, new IntentFilter( Intent.ACTION_BATTERY_CHANGED)); } }); } private BroadcastReceiver batInfoReceiver = new BroadcastReceiver() { public void onReceive(Context context, Intent intent) { String action = intent.getAction(); //如果捕捉到的action是ACTION_BATTERY_CHANGED， //就运行onBatteryInfoReceiver() if (Intent.ACTION_BATTERY_CHANGED.equals(action)) { intLevel = intent.getIntExtra("level", 0); intScale = intent.getIntExtra("scale", 100); onBatteryInfoReceiver(intLevel, intScale); } } }; //捕捉到ACTION_BATTERY_CHANGED时要运行的method public void onBatteryInfoReceiver(int intLevel, int intScale) { //create跳出的对话窗口 final Dialog d = new Dialog(Broadcast.this); d.setTitle(R.string.str_dialog_title); d.setContentView(R.layout.mydialog); //创建一个背景模糊的Window，且将对话窗口放在前景 Window window = d.getWindow(); window.setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND, WindowManager.LayoutParams.FLAG_BLUR_BEHIND); //将取得的电池计量显示于Dialog中 TextView mTextView02 = (TextView) d.findViewById(R.id.myTextView2); mTextView02.setText(getResources().getText(R.string.str_dialog_body) + String.valueOf(intLevel * 100 / intScale) + "%"); //设置返回主画面的按钮 Button mButton02 = (Button) d.findViewById(R.id.myButton2); mButton02.setOnClickListener(new Button.OnClickListener() { public void onClick(View v) { unregisterReceiver(batInfoReceiver); d.dismiss(); } }); d.show(); } }