Android -- 自訂帶進度條的按鈕

標籤：

1. 實現了一個帶進度條的按鈕，完成後顯示提示資訊，並設定按鈕為不可再次被點擊 

2. 所需要的圖片

　　             

 

3.  代碼

　　　　MainActivity

package com.example.buttondemo;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.widget.Button;import android.widget.ProgressBar;import android.widget.TextView;public class MainActivity extends Activity {int i = 0;ProgressBar progressBar = null;Button downLoadBtn = null;@ Overrideprotected void onCreate ( Bundle savedInstanceState ) {super.onCreate ( savedInstanceState );setContentView ( R.layout.activity_main );progressBar = ( ProgressBar ) findViewById ( R.id.progressBar );downLoadBtn = ( Button ) findViewById ( R.id.downLoadBtn );downLoadBtn.setOnClickListener ( new View.OnClickListener ( ) {@ Overridepublic void onClick ( View v ) {i = 0;handler.sendEmptyMessage ( new Message ( ).what = 1 );}} );}Handler handler = new Handler ( ) {public void handleMessage ( android.os.Message msg ) {switch ( msg.what ) {case 1 :i += 5;progressBar.setProgress ( i );if (i != 100) {handler.sendEmptyMessageDelayed (                              new Message ( ).what = 1 ,                              500 );downLoadBtn.setText ( i                              + "%" );}//  達到最大值 設定提示資訊，並設定按鈕為不可點擊else if (i == 100) {downLoadBtn.setText ( "下載完成" );downLoadBtn.setClickable ( false );}break;default :break;}};};}

 Layout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    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=".MainActivity" >    <RelativeLayout        android:layout_width="fill_parent"        android:layout_height="50dp"        android:layout_centerHorizontal="true"        android:layout_centerVertical="true"        android:gravity="bottom" >        <ProgressBar            android:id="@+id/progressBar"            style="?android:attr/progressBarStyleHorizontal"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:background="@drawable/aa_button_gray_normal"            android:max="100"            android:progress="0"            android:progressDrawable="@drawable/progress_selector" />        <Button            android:id="@+id/downLoadBtn"            android:layout_width="fill_parent"            android:layout_height="fill_parent"            android:layout_centerHorizontal="true"            android:layout_centerVertical="true"            android:background="@drawable/btn_selector"            android:text="下載" />    </RelativeLayout></RelativeLayout>

 btn_selector.xml

<?xml version="1.0" encoding="utf-8"?><selector xmlns:android="http://schemas.android.com/apk/res/android" >    <item android:state_pressed="false" android:drawable="@android:color/transparent"></item>    <item android:state_pressed="true" android:drawable="@drawable/aa_button_gray_pressed"></item></selector>

 progress_selector.xml

<?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android" >    <item android:id="@android:id/progress">        <clip            android:clipOrientation="horizontal"            android:drawable="@drawable/aa_button_normal"            android:gravity="left" />    </item></layer-list>

 每天進步一點點

Android -- 自訂帶進度條的按鈕