基于asp.net + easyui框架，一步步学习easyui-datagrid——完成，总结（四）

浏览数：156 / 时间：2015年06月09日
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的可定制性也不太强，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：

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">
	<TextView
            android: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"
		    >
        <TextView
            android: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"
        />
        <TextView
            android: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"
    >
    <item
        android:id="@android:id/background"
        android:drawable="@drawable/common_progress_dialog_progressbar3"
        />
	<item
	    android: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 stub
		initFormats();
	}


	@Override
	protected void onCreate(Bundle savedInstanceState) {
		// TODO Auto-generated method stub
		super.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() {


			@Override
			public void handleMessage(Message msg) {
				// TODO Auto-generated method stub
				super.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;
        } 
    }


	@Override
	public void setMessage(CharSequence message) {
		// TODO Auto-generated method stub
		//super.setMessage(message);
		if(mProgressMessage!=null){
			mProgressMessage.setText(message);
		}
		else{
			mMessage = message;
		}
	}


	@Override
	protected void onStart() {
		// TODO Auto-generated method stub
		super.onStart();
		mHasStarted = true;
	}


	@Override
	protected void onStop() {
		// TODO Auto-generated method stub
		super.onStop();
		mHasStarted = false;
	}
    
}



测试程序：

	private void showDialog(){
		mDialog = new CommonProgressDialog(this);
		
		mDialog.setMessage("正在下载");
		mDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
		mDialog.setOnCancelListener(new OnCancelListener() {
			
			@Override
			public void onCancel(DialogInterface dialog) {
				// TODO Auto-generated method stub
				//cancel(true);
			}
		});
		mDialog.show();
		
		mDialog.setMax(100*1024*1024);
		mDialog.setProgress(65*1024*1024);
	}



基于asp.net + easyui框架，一步步学习easyui-datagrid——完成，总结（四）,古老的榕树,5-wow.com

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标签： 自定义 progressdialog android 对话框 进度条 自定义 progressdialog android 对话框 进度条

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