本文简单介绍下Android之自定义ProgressBar。

多的不说，先上图

Android之自定义ProgressBar_第1张图片Android之自定义ProgressBar_第2张图片


布局文件

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_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"    android:orientation="vertical" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world"        android:padding="5dp" />    <ProgressBar         android:id="@+id/progress1"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:padding="5dp"        />    <ProgressBar         android:id="@+id/progress2"        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:max="100"        android:progress="60"        android:secondaryProgress="80"        android:padding="5dp"/>    <ProgressBar         android:id="@+id/progress3"        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="match_parent"        android:layout_height="wrap_content"        android:max="100"        android:progress="60"        android:secondaryProgress="80"        android:progressDrawable="@drawable/progress_horizontal"        android:padding="5dp"/>    <ProgressBar        android:id="@+id/progress4"        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="fill_parent"        android:layout_height="25dp"        android:max="100"        android:progress="80"        android:paddingLeft="1dp"        android:paddingRight="1dp"        android:progressDrawable="@drawable/progressbar_layer_list"        android:padding="5dp"/>    <ProgressBar         android:id="@+id/progress5"         android:layout_width="30dip"         android:layout_height="30dip"         android:indeterminateDrawable="@drawable/progress_selector"        android:visibility="visible"         />    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="progress value"        android:padding="5dp" />    <LinearLayout         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Button             android:id="@+id/btn1"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="value -"/>        <Button             android:id="@+id/btn2"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="value +"/>    </LinearLayout>    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="second progress value"        android:padding="5dp" />    <LinearLayout         android:layout_width="match_parent"        android:layout_height="wrap_content"        android:orientation="horizontal">        <Button             android:id="@+id/btn3"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="value -"/>        <Button             android:id="@+id/btn4"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:text="value +"/>    </LinearLayout></LinearLayout>

布局文件关联的文件

progress_horizontal.xml

<?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="@color/red">    </item>        <item android:id="@android:id/secondaryProgress">        <scale            android:drawable="@color/green"            android:scaleWidth="100%" />    </item>        <item android:id="@android:id/progress">        <scale            android:drawable="@color/blue"            android:scaleWidth="100%" />    </item></layer-list>

progressbar_layer_list.xml

<?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/pic2"></item><itemandroid:id="@android:id/progress"android:drawable="@drawable/pic1"></item></layer-list>

progress_selector.xml

<?xml version="1.0" encoding="UTF-8"?><rotate xmlns:android="http://schemas.android.com/apk/res/android"android:pivotX="50%" android:pivotY="50%"android:fromDegrees="0"android:toDegrees="360"><shapeandroid:shape="ring"android:innerRadiusRatio="3"android:thicknessRatio="8"android:useLevel="false"><gradient android:type="sweep"android:useLevel="false"android:startColor="#871318"android:centerColor="#D5202A"android:centerY="0.50"android:endColor="#FFEEEE"/></shape></rotate>

主程序

package com.sl.progressbardemo;import android.os.Bundle;import android.view.View;import android.view.View.OnClickListener;import android.view.Window;import android.widget.Button;import android.widget.ProgressBar;import android.app.Activity;public class MainActivity extends Activity{private ProgressBar mProgressBar2;private ProgressBar mProgressBar3;private ProgressBar mProgressBar4;private Button mButton1;private Button mButton2;private Button mButton3;private Button mButton4;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);requestWindowFeature(Window.FEATURE_PROGRESS);setContentView(R.layout.activity_main);setProgressBarVisibility(true);mProgressBar2 = (ProgressBar)findViewById(R.id.progress2);mProgressBar3 = (ProgressBar)findViewById(R.id.progress3);mProgressBar4 = (ProgressBar)findViewById(R.id.progress4);mButton1 = (Button)findViewById(R.id.btn1);mButton2 = (Button)findViewById(R.id.btn2);mButton3 = (Button)findViewById(R.id.btn3);mButton4 = (Button)findViewById(R.id.btn4);mButton1.setOnClickListener(listener);mButton2.setOnClickListener(listener);mButton3.setOnClickListener(listener);mButton4.setOnClickListener(listener);}Button.OnClickListener listener = new OnClickListener(){@Overridepublic void onClick(View v){Button button = (Button)v;switch (button.getId()){case R.id.btn1:mProgressBar2.incrementProgressBy(-5);mProgressBar3.incrementProgressBy(-5);mProgressBar4.incrementProgressBy(-5);break;case R.id.btn2:mProgressBar2.incrementProgressBy(5);mProgressBar3.incrementProgressBy(5);mProgressBar4.incrementProgressBy(5);break;case R.id.btn3:mProgressBar2.incrementSecondaryProgressBy(-5);mProgressBar3.incrementSecondaryProgressBy(-5);break;case R.id.btn4:mProgressBar2.incrementSecondaryProgressBy(5);mProgressBar3.incrementSecondaryProgressBy(5);break;default:break;}}};}

源码下载


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