rogressBar、SeekBar以及RatingBar的使用 _rogressBar

一、各自的功能及用途ProgressBar：进度条，主要向用户展示当前任务的完成进度，例如游戏加载、App更新、文件下载等；
SeekBar：进度条的升级款，与ProgressBar不同的是用户可以自行拖动以控制进度；音量大小、音视频的播放进度等都可以用它实现；
RatingBar：星级评分条，这里我只用三个字描述：“打分的”，多用于电商类app以及各大应用商店，比如对某款app、某件商品评分
二、简单使用1、打开之前的布局文件activity_main.xml，先删掉之前定义的所有控件，然后再添加今天我们讲到的控件,如图1

文章插图
图1

2、打开MainActivity.JAVA,因为布局中之前定义的控件已经被删掉，所以代码中也需要清理，不然因为找不到控件id会报错；清掉后定义并绑定今天的控件

public class MainActivity extends AppCompatActivity {private ProgressBar pbProgress;private SeekBar sbProgress;private RatingBar rbEvaluate;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);initView();pbProgress.setProgress(30);sbProgress.setMax(100);setListener();}private void setListener() {sbProgress.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {@Overridepublic void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {Log.e("onProgressChanged======",progress+"");}@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {}@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {}});rbEvaluate.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {@Overridepublic void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {Log.e("onRatingChanged======",rating+"");}});}private void initView() {rbEvaluate=findViewById(R.id.rb_evaluate);pbProgress=findViewById(R.id.pb_progress);sbProgress=findViewById(R.id.sb_progress);}}

代码中我用setProgress()方法为pbProgress设置了当前进度
三、官网对于上述控件的属性介绍1、RatingBar
Android:isIndicator
Whether this rating bar is an indicator (and non-changeable by the user).
android:numStars
The number of stars (or rating items) to show.
android:rating
The rating to set by default.
android:stepSize
The step size of the rating.
2、SeekBar
android:thumb
Draws the thumb on a seekbar.
3、ProgressBar
android:animationResolution
Timeout between frames of animation in milliseconds.
android:indeterminate
Allows to enable the indeterminate mode.
android:indeterminateBehavior
Defines how the indeterminate mode should behave when the progress reaches max.
android:indeterminateDrawable
Drawable used for the indeterminate mode.
android:indeterminateDuration
Duration of the indeterminate animation.
android:indeterminateOnly
Restricts to ONLY indeterminate mode (state-keeping progress mode will not work).
android:indeterminateTint
Tint to apply to the indeterminate progress indicator.
android:indeterminateTintMode
Blending mode used to apply the indeterminate progress indicator tint.
android:interpolator
Sets the acceleration curve for the indeterminate animation.
android:max
Defines the maximum value.
android:maxHeight
An optional argument to supply a maximum height for this view.
android:maxWidth
An optional argument to supply a maximum width for this view.
android:min
Defines the minimum value.
android:minHeight

android:minWidth

android:mirrorForRtl
Defines if the associated drawables need to be mirrored when in RTL mode.
android:progress
Defines the default progress value, between 0 and max.
android:progressBackgroundTint
Tint to apply to the progress indicator background.
android:progressBackgroundTintMode
Blending mode used to apply the progress indicator background tint.
【rogressBar、SeekBar以及RatingBar的使用】android:progressDrawable
Drawable used for the progress mode.
android:progressTint
Tint to apply to the progress indicator.
android:progressTintMode
Blending mode used to apply the progress indicator tint.
android:secondaryProgress
Defines the secondary progress value, between 0 and max.
android:secondaryProgressTint
Tint to apply to the secondary progress indicator.
android:secondaryProgressTintMode
Blending mode used to apply the secondary progress indicator tint.