Android控件之ProgressBar

最新推荐文章于 2024-10-12 17:18:20 发布

milotian

最新推荐文章于 2024-10-12 17:18:20 发布

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本文详细介绍了Android中ProgressBar的多种样式及使用方法，包括水平进度条、不同大小的转圈加载样式、对话框样式以及如何在标题栏显示转圈加载指示器。

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1,带有进度条的ProgressBar

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 protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
   
     // Request the progress bar to be shown in the title  
     requestWindowFeature(Window.FEATURE_PROGRESS);  
     setContentView(R.layout.progressbar_1);  
     setProgressBarVisibility(true);//设置在title里的ProgressBar可见  
       
     final ProgressBar progressHorizontal = (ProgressBar) findViewById(R.id.progress_horizontal);  
       
     setProgress(progressHorizontal.getProgress() * 100);//为title中的ProgressBar设置进度  
     setSecondaryProgress(progressHorizontal.getSecondaryProgress() * 100);//为title中的ProgressBar设置二级进度  
       
     Button button = (Button) findViewById(R.id.increase);//一级进度递增  
     button.setOnClickListener(new Button.OnClickListener() {  
         public void onClick(View v) {  
             progressHorizontal.incrementProgressBy(1);  
             // Title progress is in range 0..10000  
             setProgress(100 * progressHorizontal.getProgress());//为title中的ProgressBar设置进度  
         }  
     });  
   
     button = (Button) findViewById(R.id.decrease);//一级进度递减  
     button.setOnClickListener(new Button.OnClickListener() {  
         public void onClick(View v) {  
             progressHorizontal.incrementProgressBy(-1);  
             // Title progress is in range 0..10000  
             setProgress(100 * progressHorizontal.getProgress());//为title中的ProgressBar设置进度  
         }  
     });  
   
     button = (Button) findViewById(R.id.increase_secondary);//二级进度递增  
     button.setOnClickListener(new Button.OnClickListener() {  
         public void onClick(View v) {  
             progressHorizontal.incrementSecondaryProgressBy(1);  
             // Title progress is in range 0..10000  
             setSecondaryProgress(100 * progressHorizontal.getSecondaryProgress());  
         }  
     });  
   
     button = (Button) findViewById(R.id.decrease_secondary);//二级进度递减  
     button.setOnClickListener(new Button.OnClickListener() {  
         public void onClick(View v) {  
             progressHorizontal.incrementSecondaryProgressBy(-1);  
             // Title progress is in range 0..10000  
             setSecondaryProgress(100 * progressHorizontal.getSecondaryProgress());  
         }  
     });  
       
 }  

配置文件 :

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 <ProgressBar android:id="@+id/progress_horizontal"  
     style="?android:attr/progressBarStyleHorizontal"  
     android:layout_width="200dip"  
     android:layout_height="wrap_content"  
     android:max="100"  
     android:progress="50"  
     android:secondaryProgress="75" />  

效果图:

2, 转圈的样式的ProgressBar

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 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
     android:layout_width="match_parent"  
     android:layout_height="wrap_content"  
     android:orientation="vertical" >  
   
     <ProgressBar  
         android:id="@+android:id/progress_large"  
         style="?android:attr/progressBarStyleLarge"//大样式  
         android:layout_width="wrap_content"  
         android:layout_height="wrap_content" />  
   
     <ProgressBar                                  //默认  
         android:id="@+android:id/progress"  
         android:layout_width="wrap_content"  
         android:layout_height="wrap_content" />  
   
     <ProgressBar  
         android:id="@+android:id/progress_small"   //小样式  
         style="?android:attr/progressBarStyleSmall"  
         android:layout_width="wrap_content"  
         android:layout_height="wrap_content" />  
   
     <ProgressBar                                   //小标题样式  
         android:id="@+android:id/progress_small_title"  
         style="?android:attr/progressBarStyleSmallTitle"  
         android:layout_width="wrap_content"  
         android:layout_height="wrap_content" />  
   
 </LinearLayout>  

Java代码:

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 protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
   
     // Request for the progress bar to be shown in the title  
     requestWindowFeature(Window.FEATURE_<span style="color:#ff0000;">INDETERMINATE</span>_PROGRESS);  
       
     setContentView(R.layout.progressbar_2);  
       
     // Make sure the progress bar is visible  
     setProgressBarVisibility(true);  
 }  

效果:

3,Dialog样式的ProgressBar

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 private static final int DIALOG1_KEY = 0;  
    private static final int DIALOG2_KEY = 1;  
   
   
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
   
        setContentView(R.layout.progressbar_3);  
   
        Button button = (Button) findViewById(R.id.showIndeterminate);  
        button.setOnClickListener(new View.OnClickListener() {  
            public void onClick(View v) {  
                showDialog(DIALOG1_KEY);  
            }  
        });  
   
        button = (Button) findViewById(R.id.showIndeterminateNoTitle);  
        button.setOnClickListener(new View.OnClickListener() {  
            public void onClick(View v) {  
                showDialog(DIALOG2_KEY);  
            }  
        });  
    }  
   
    @Override  
    protected Dialog onCreateDialog(int id) {  
        switch (id) {  
            case DIALOG1_KEY: {  
                ProgressDialog dialog = new ProgressDialog(this);  
                dialog.setTitle("Indeterminate");  
                dialog.setMessage("Please wait while loading...");  
                dialog.set<span style="color:#ff0000;">Indeterminate</span>(true);//设置转圈的效果  
                dialog.setCancelable(true);  
                return dialog;  
            }  
            case DIALOG2_KEY: {  
                ProgressDialog dialog = new ProgressDialog(this);  
                dialog.setMessage("Please wait while loading...");  
                dialog.set<span style="color:#ff0000;">Indeterminate</span>(true);//设置转圈的效果  
                dialog.setCancelable(true);  
                return dialog;  
            }  
        }  
        return null;  
    }  

效果:

4,在title上面的转圈的ProgressBar

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 private boolean mToggleIndeterminate = false;  
   
 @Override  
 protected void onCreate(Bundle savedInstanceState) {  
     super.onCreate(savedInstanceState);  
   
     // Request progress bar  
     requestWindowFeature(Window.FEATURE_<span style="color:#ff0000;">INDETERMINATE</span>_PROGRESS);//转圈样的ProgressBar  
     setContentView(R.layout.progressbar_4);  
     setProgressBarIndeterminateVisibility(mToggleIndeterminate);//是否可见  
       
     Button button = (Button) findViewById(R.id.toggle);  
     button.setOnClickListener(new Button.OnClickListener() {  
         public void onClick(View v) {  
             mToggleIndeterminate = !mToggleIndeterminate;//如果是false,设成true,如果是true设成false.  
             setProgressBarIndeterminateVisibility(mToggleIndeterminate);//是否可见  
         }  
     });  
 }  