实例详解Android自定义ProgressDialog进度条对话框的实现

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;}}

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);}