Android:SeekBar和RatingBar控件

SeekBar的创建（可滑动的）

1、在布局文件中声明 SeekBar

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><TextView      android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:text="@string/hello"    />   <SeekBar android:id="@+id/seekBar"android:layout_width="fill_parent"android:layout_height="wrap_content"/></LinearLayout>

2、定义一个OnSeekBarChangeListener：监听器：

3、为SeekBar设置监听器

public class HelloBarActivity extends Activity {    /** Called when the activity is first created. */private SeekBar seekBar = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        seekBar = (SeekBar)findViewById(R.id.seekBar);        //设置该进度条的最大值        seekBar.setMax(100);        seekBar.setOnSeekBarChangeListener(new SeekBarListener());    }    //定义一个监听器，该监听器负责监听进度条状态的改变    private class SeekBarListener implements SeekBar.OnSeekBarChangeListener{    //当进度条的进度发生变化时，会调用该方法@Overridepublic void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {//fromUser区分是不是用户滑动滑块。System.out.println(progress);}//当用户开始滑动滑块时，调用该方法@Overridepublic void onStartTrackingTouch(SeekBar seekBar) {System.out.println("start--->" + seekBar.getProgress());}//当用户结束对滑块的滑动时，调用该方法@Overridepublic void onStopTrackingTouch(SeekBar seekBar) {System.out.println("stop--->" + seekBar.getProgress());}        }}

RatingBar的创建（评级进度）

1、在布局文件中声明 RatingBar（数量，第次前进多少）

main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:orientation="vertical"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    ><TextView      android:layout_width="fill_parent"     android:layout_height="wrap_content"     android:text="@string/hello"    /><RatingBarandroid:id="@+id/ratingbarId"android:layout_height="wrap_content"android:layout_width="wrap_content"android:numStars="5"android:stepSize="1.0"/></LinearLayout>

2、定义一个RatingBar.OnRationBarChangeListener监听器（）
3、为RatingBar设置监听器

public class MainActivity extends Activity {    /** Called when the activity is first created. */private RatingBar ratingBar = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        ratingBar = (RatingBar)findViewById(R.id.ratingbarId);        ratingBar.setOnRatingBarChangeListener(new RatingBarListener());    }        private class RatingBarListener implements RatingBar.OnRatingBarChangeListener{@Overridepublic void onRatingChanged(RatingBar ratingBar, float rating,boolean fromUser) {System.out.println("rating--->" + rating);}    }}

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