[置顶] Android银弧刀之ProgressBar之最炫民族风

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[置顶] Android银弧刀之ProgressBar之最炫民族风

银弧刀 
        陆无双抬起头来,只见四名乞丐,一字排在门外,或高或矮,一齐望着自己。她曾用银弧刀伤了一个乞丐,一见这四人来意不善,心中暗暗吃惊。。。杨过听了她声音,也是大吃一惊,只听另一个女人声音道:“那叫化子背上的,明明是师妹的银弧刀,就可惜没能起下来认一下。”

        今天我们学习如何利用Android平台“银弧刀”ProgressBar来实现各种样式的进度条,白的黄的都有^_^。实际生活中进度条常常用来提示用户后台正在执行比较耗时的操作,请等待一会儿。当操作执行完毕时,它就随风逝去了。下面给出该情景的案例:

一、案例技术要点

1.ProgressBar布局设置
style="?android:attr/progressBarStyleSmallTitle":小圆形进度条
style="?android:attr/progressBarStyleLarge":大圆形进度条
style="?android:attr/progressBarStyleHorizontal":水平进度条
2.设置有刻度效果的窗口
requestWindowFeature(Window.FEATURE_PROGRESS):设置窗口有进度条
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS):设置窗口有模糊进度条
setProgressBarVisibility(true):设置进度条显示
setProgressBarIndeterminate(true):设置模糊进度条显示
3.android.widget.ProgressBar:Android进度条类
progressBar.setProgress(...):设置进度条刻度值
progressBar.getProgress():获取进度条刻度值

二、案例代码陈列

工程包目录

[置顶] Android银弧刀之ProgressBar之最炫民族风

AndroidManifest.xml

<manifest xmlns:android="http://schemas.android.com/apk/res/android"

    package="com.android.progressbar"

    android:versionCode="1"

    android:versionName="1.0" >



    <uses-sdk

        android:minSdkVersion="8"

        android:targetSdkVersion="15" />



    <application

        android:icon="@drawable/ic_launcher"

        android:label="@string/app_name" >

        <activity

            android:name=".ProgressBarMainActivity"

            android:label="@string/app_name" >

            <intent-filter>

                <action android:name="android.intent.action.MAIN" />



                <category android:name="android.intent.category.LAUNCHER" />

            </intent-filter>

        </activity>

    </application>



</manifest>

strings.xml

<resources>

    <string name="app_name">ProgressBar大世界</string>

</resources>

main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical" >



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="小圆形进度条" />



    <ProgressBar

        style="?android:attr/progressBarStyleSmallTitle"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="中圆形进度条" />



    <ProgressBar

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="大圆形进度条" />



    <ProgressBar

        style="?android:attr/progressBarStyleLarge"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />



    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:text="水平进度条" />



    <ProgressBar

        style="?android:attr/progressBarStyleHorizontal"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:max="100"

        android:progress="30" />



    <ProgressBar

        android:id="@+id/progressBar"

        style="?android:attr/progressBarStyleHorizontal"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="20dp"

        android:max="100"

        android:progress="30"

        android:secondaryProgress="60" />



    <LinearLayout

        xmlns:android="http://schemas.android.com/apk/res/android"

        android:layout_width="match_parent"

        android:layout_height="match_parent"

        android:orientation="horizontal" >



        <Button

            android:id="@+id/button1"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="增加刻度" />



        <Button

            android:id="@+id/button2"

            android:layout_width="wrap_content"

            android:layout_height="wrap_content"

            android:text="减小刻度" />

    </LinearLayout>



</LinearLayout>

ProgressBarMainActivity.java

package com.android.progressbar;



import android.app.Activity;

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;



/**

 * ProgressBar案例:各种样式的进度条

 * 向用户展示当前任务的进度

 * @author lynnli1229

 */

public class ProgressBarMainActivity extends Activity implements OnClickListener{

    private ProgressBar progressBar;

    private Button button1, button2;



    @Override

    public void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        

        // 设置有刻度效果的窗口

        requestWindowFeature(Window.FEATURE_PROGRESS);

        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);

        

        setContentView(R.layout.main);

        progressBar = (ProgressBar) findViewById(R.id.progressBar);

        setProgressBarVisibility(true);

        setProgressBarIndeterminate(true);

        setProgress(3500);

        

        button1 = (Button) findViewById(R.id.button1);

        button2 = (Button) findViewById(R.id.button2);

        button1.setOnClickListener(this);

        button2.setOnClickListener(this);

    }



    @Override

    public void onClick(View v) {

        switch (v.getId()) {

        case R.id.button1:

            progressBar.setProgress((int) (progressBar.getProgress() * 1.2));

            progressBar.setSecondaryProgress((int) (progressBar.getSecondaryProgress() * 1.2));

            break;



        case R.id.button2:

            progressBar.setProgress((int) (progressBar.getProgress() * 0.8));

            progressBar.setSecondaryProgress((int) (progressBar.getSecondaryProgress() * 0.8));

            break;

        }

    }

}

三、案例效果展示

[置顶] Android银弧刀之ProgressBar之最炫民族风  [置顶] Android银弧刀之ProgressBar之最炫民族风


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