学习中1(来源于sdk大全)

 

package com.receiver.test2;

 

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 ReceiverTest extends Activity {

private int intLevel;

private int intScale;

private Button mButton01;

 

 

    private BroadcastReceiver mBatInfoReceiver = new BroadcastReceiver() {

 

@Override

public void onReceive(Context context, Intent intent) {

// TODO Auto-generated method stub

String action = intent.getAction();

if(Intent.ACTION_BATTERY_CHANGED.equals(action)) {

intLevel = intent.getIntExtra("level", 0);

intScale = intent.getIntExtra("scale", 100);

onBatteryInfoReceiver(intLevel,intScale);

}

}

    

    };

    /** Called when the activity is first created. */

    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.main);

        mButton01 = (Button)findViewById(R.id.myButton1);

 

        mButton01.setOnClickListener(new Button.OnClickListener(){

 

@Override

public void onClick(View arg0) {

// TODO Auto-generated method stub

registerReceiver(mBatInfoReceiver, new IntentFilter(Intent.ACTION_BATTERY_CHANGED));

}

        

        });

    }

 

    public void onBatteryInfoReceiver(int intLevel, int intScale) {

     final Dialog d = new Dialog(ReceiverTest.this);

     d.setContentView(R.layout.mydialog);

    

     Window window = d.getWindow();

     window.setFlags(WindowManager.LayoutParams.FLAG_BLUR_BEHIND, WindowManager.LayoutParams.FLAG_BLUR_BEHIND);

    

     TextView mTextView02 = (TextView)d.findViewById(R.id.myTextView02);

     mTextView02.setText(getResources().getText(R.string.str_dialog_body)+String.valueOf(intLevel * 100/intScale) + "%");

    

     Button mButton02 = (Button)d.findViewById(R.id.myButton2);

     mButton02.setOnClickListener(new Button.OnClickListener() {

 

@Override

public void onClick(View v) {

// TODO Auto-generated method stub

unregisterReceiver(mBatInfoReceiver);

d.dismiss();

}

    

     });

     d.show();

    }

}

 

 

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"

    >

<TextView  

    android:layout_width="wrap_content" 

    android:layout_height="wrap_content" 

    android:text="@string/how_to_get_battery"

    />

    <Button

     android:id="@+id/myButton1"

     android:layout_width="wrap_content"

     android:layout_height="wrap_content" 

     android:text="@string/press_me"

    />

</LinearLayout>

 

 

 

mydialog.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"

    >

<TextView  

android:id="@+id/myTextView02"

    android:layout_width="wrap_content" 

    android:layout_height="wrap_content" 

    android:text="@string/hello"

    />

    <Button

     android:id="@+id/myButton2"

     android:layout_width="wrap_content"

     android:layout_height="wrap_content" 

     android:text="@string/return_back"

    />

</LinearLayout>

<?xml version="1.0" encoding="utf-8"?> <resources>     <string name="hello">Hello World, ReceiverTest!</string>     <string name="app_name">ReceiverTest2</string>     <string name="str_dialog_body">电量计算：</string>     <string name="how_to_get_battery">如何获取电池电量？</string>     <string name="press_me">点击我获得电量</string>     <string name="return_back">返回</string>      </resources>

 

manifest.xmlbu