• Android银弧刀之ProgressBar之最炫民族风


    传送门 ☞ Android兵器谱 ☞ 转载请注明 ☞ http://blog.csdn.net/leverage_1229


    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


    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
     

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  • 原文地址:https://www.cnblogs.com/innosight/p/3271186.html
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