这篇文章主要介绍了实例详解Android自定义ProgressDialog进度条对话框的实现的相关资料,需要的朋友可以参考下
正文
实例详解Android自定义ProgressDialog进度条对话框的实现
android sdk已经提供有进度条组件progressdialog组件，但用的时候我们会发现可能风格与我们应用的整体风格不太搭配，而且progressdialog的可定制行也不太强，这时就需要我们自定义实现一个progressdialog。
通过看源码我们发现，progressdialog继承自alertdialog，有一个progressbar和两个textview组成的，通过对progressdialog的源码进行改进就可以实现一个自定义的progressdialog。
1、效果：
首先看一下自定义commonprogressdialog和原生progressdialog的对比：
2、代码：
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common_progress_dialog.xml 布局文件： <framelayout xmlns:android="http://schemas.android.com/apk/res/android"xmlns:tools="http://schemas.android.com/tools"android:layout_width="wrap_content"android:layout_height="wrap_content"><linearlayout android:layout_width="798px"android:layout_height="460px"android:orientation="vertical"android:background="@drawable/common_progress_dialog_background"><textviewandroid:id="@+id/progress_message"android:layout_width="wrap_content"android:layout_height="wrap_content"android:textsize="44px"android:layout_margintop="113px"android:layout_gravity="center_horizontal"android:textcolor="#ffffff"/><progressbar android:id="@+id/progress"style="?android:attr/progressbarstylehorizontal"android:layout_width="712px"android:layout_height="30px"android:layout_margintop="100px"android:layout_marginleft="47px"android:layout_centerhorizontal="true"android:progressdrawable="@drawable/common_progressdialog_progressbar_background"/><linearlayout android:layout_width="wrap_content"android:layout_height="wrap_content"android:orientation="horizontal"><textviewandroid:id="@+id/progress_percent"android:layout_width="80px"android:layout_height="wrap_content"android:textsize="30px"android:layout_marginleft="280px"android:gravity="center_horizontal"android:textcolor="#ffffff"/><textviewandroid:id="@+id/progress_number"android:layout_width="250px"android:layout_height="wrap_content"android:layout_marginleft="120px"android:textsize="30px"android:gravity="center_horizontal"android:textcolor="#ffffff"/></linearlayout></linearlayout></framelayout>common_progressdialog_progressbar_background.xml progressbar进度条图片和背景图片设置 <?xml version="1.0" encoding="utf-8"?><layer-list xmlns:android="http://schemas.android.com/apk/res/android"><itemandroid:id="@android:id/background"android:drawable="@drawable/common_progress_dialog_progressbar3"/><itemandroid:id="@android:id/progress"android:drawable="@drawable/common_progress_dialog_progressbar2"/></layer-list>commonprogressdialog.java类： package com.johnny.testactivity;import java.text.numberformat;import android.app.alertdialog;import android.app.progressdialog;import android.content.context;import android.os.bundle;import android.os.handler;import android.os.message;import android.text.spannable;import android.text.spannablestring;import android.text.style.stylespan;import android.util.log;import android.view.layoutinflater;import android.view.view;import android.widget.progressbar;import android.widget.textview;public class commonprogressdialog extends alertdialog {private progressbar mprogress;private textview mprogressnumber;private textview mprogresspercent;private textview mprogressmessage;private handler mviewupdatehandler;private int mmax;private charsequence mmessage;private boolean mhasstarted;private int mprogressval;private string tag="commonprogressdialog";private string mprogressnumberformat;private numberformat mprogresspercentformat;public commonprogressdialog(context context) {super(context);// todo auto-generated constructor stubinitformats();}@overrideprotected void oncreate(bundle savedinstancestate) {// todo auto-generated method stubsuper.oncreate(savedinstancestate);setcontentview(r.layout.common_progress_dialog);mprogress=(progressbar) findviewbyid(r.id.progress);mprogressnumber=(textview) findviewbyid(r.id.progress_number);mprogresspercent=(textview) findviewbyid(r.id.progress_percent);mprogressmessage=(textview) findviewbyid(r.id.progress_message);// layoutinflater inflater = layoutinflater.from(getcontext());mviewupdatehandler = new handler() {@overridepublic void handlemessage(message msg) {// todo auto-generated method stubsuper.handlemessage(msg);int progress = mprogress.getprogress();int max = mprogress.getmax();double dprogress = (double)progress/(double)(1024 * 1024);double dmax = (double)max/(double)(1024 * 1024);if (mprogressnumberformat != null) {string format = mprogressnumberformat;mprogressnumber.settext(string.format(format, dprogress, dmax));} else {mprogressnumber.settext("");}if (mprogresspercentformat != null) {double percent = (double) progress / (double) max;spannablestring tmp = new spannablestring(mprogresspercentformat.format(percent));tmp.setspan(new stylespan(android.graphics.typeface.bold),0, tmp.length(), spannable.span_exclusive_exclusive);mprogresspercent.settext(tmp);} else {mprogresspercent.settext("");}}};// view view = inflater.inflate(r.layout.common_progress_dialog, null);// mprogress = (progressbar) view.findviewbyid(r.id.progress);// mprogressnumber = (textview) view.findviewbyid(r.id.progress_number);// mprogresspercent = (textview) view.findviewbyid(r.id.progress_percent);// setview(view);//mprogress.setmax(100);onprogresschanged();if (mmessage != null) {setmessage(mmessage);}if (mmax > 0) {setmax(mmax);}if (mprogressval > 0) {setprogress(mprogressval);}}private void initformats() {mprogressnumberformat = "%1.2fm/%2.2fm";mprogresspercentformat = numberformat.getpercentinstance();mprogresspercentformat.setmaximumfractiondigits(0);}private void onprogresschanged() {mviewupdatehandler.sendemptymessage(0);}public void setprogressstyle(int style) {//mprogressstyle = style;}public int getmax() {if (mprogress != null) {return mprogress.getmax();}return mmax;}public void setmax(int max) {if (mprogress != null) {mprogress.setmax(max);onprogresschanged();} else {mmax = max;}}public void setindeterminate(boolean indeterminate) {if (mprogress != null) {mprogress.setindeterminate(indeterminate);} // else {// mindeterminate = indeterminate;// }}public void setprogress(int value) {if (mhasstarted) {mprogress.setprogress(value);onprogresschanged();} else {mprogressval = value;} }@overridepublic void setmessage(charsequence message) {// todo auto-generated method stub//super.setmessage(message);if(mprogressmessage!=null){mprogressmessage.settext(message);}else{mmessage = message;}}@overrideprotected void onstart() {// todo auto-generated method stubsuper.onstart();mhasstarted = true;}@overrideprotected void onstop() {// todo auto-generated method stubsuper.onstop();mhasstarted = false;}} |
测试程序：
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private void showdialog(){mdialog = new commonprogressdialog(this);mdialog.setmessage("正在下载");mdialog.setprogressstyle(progressdialog.style_horizontal);mdialog.setoncancellistener(new oncancellistener() {@overridepublic void oncancel(dialoginterface dialog) {// todo auto-generated method stub//cancel(true);}});mdialog.show();mdialog.setmax(100*1024*1024);mdialog.setprogress(65*1024*1024);} |
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