Step by Step _android Development Course [27]_ User Interface Seekbar (drag bar)

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Browse Links: http://blog.csdn.net/y18334702058/article/details/44624305

• Topic: User Interface Seekbar (drag bar)
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Seekbar drag Bar (instance):

Activity_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" ;          <seekbar  android : ID  = "@+id/seek"  android:layout_width= "fill_parent"  android:layout_height  =
     
       "wrap_content" 
      android:max  =" " android:progress  ="  />          <TextViewandroid:id= "@+id/progress"android:layout_width="Fill_ Parent "android:layout_height=" wrap_content " />                                                <TextViewandroid:id="@+id/tracking"android:layout_width=  "Fill_parent"android:layout_height="wrap_content" />                                         </linearlayout>

Mainactivity.java:

Importandroid.app.Activity;ImportAndroid.os.Bundle;ImportAndroid.widget.SeekBar;ImportAndroid.widget.SeekBar.OnSeekBarChangeListener;ImportAndroid.widget.TextView; Public  class mainactivity extends Activity {SeekBar Mseekbar;        TextView Mprogresstext; TextView Mtrackingtext;@Override         Public void onCreate(Bundle savedinstancestate) {Super. OnCreate (Savedinstancestate); Setcontentview (R.layout.activity_main);//Get Seekbar objectMseekbar = (SeekBar) Findviewbyid (R.id.seek); Mseekbar.setonseekbarchangelistener (NewListener ());                Mprogresstext = (TextView) Findviewbyid (r.id.progress);        Mtrackingtext = (TextView) Findviewbyid (r.id.tracking); } class Listener implements onseekbarchangelistener{ Public void onprogresschanged(SeekBar SeekBar,intProgressBooleanFromuser) {//progress is the size of the current valueMprogresstext.settext ("Current value:"+ progress); }@Override        //This method is called in drag         Public void Onstarttrackingtouch(SeekBar SeekBar) {Mtrackingtext.settext ("Adjusting"); }@Override        //Stop dragging         Public void Onstoptrackingtouch(SeekBar SeekBar) {Mtrackingtext.settext ("Stop Adjustment"); }     }}

Operation Result:

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Browse Links: http://blog.csdn.net/y18334702058/article/details/44624305

Step by Step _android Development Course [27]_ User Interface Seekbar (drag bar)