Android SeekBar的使用——简单案例

01

<?

xml

version

=

"1.0"

encoding

=

"utf-8"

?>

02

<

LinearLayout

xmlns:android

=

"http://schemas.android.com/apk/res/android"

03

android:orientation

=

"vertical"

android:layout_width

=

"fill_parent"

04

android:layout_height

=

"fill_parent"

>

05

<

SeekBar

android:id

=

"@+id/SeekBar01"

android:layout_width

=

"fill_parent"

06

android:layout_height

=

"wrap_content"

android:max

=

"100"

07

android:progress

=

"50"

android:secondaryProgress

=

"100"

></

SeekBar

>

08

<

TextView

android:id

=

"@+id/TextView1"

android:layout_width

=

"fill_parent"

09

android:layout_height

=

"wrap_content"

android:text

=

""

/>

10

<

TextView

android:id

=

"@+id/TextView2"

android:layout_width

=

"fill_parent"

11

android:layout_height

=

"wrap_content"

android:text

=

""

/>

12

</

LinearLayout

>

01

package

com.Aina.Android;

02

03

import

android.app.Activity;

04

import

android.os.Bundle;

05

import

android.widget.SeekBar;

06

import

android.widget.TextView;

07

08

public

class

Test_SeekBar

extends

Activity

implements

SeekBar.OnSeekBarChangeListener{

09

/** Called when the activity is first created. */

10

private

SeekBar seekBar;

11

private

TextView textView1,textView2;

12

@Override

13

public

void

onCreate(Bundle savedInstanceState) {

14

super

.onCreate(savedInstanceState);

15

setContentView(R.layout.main);

16

seekBar = (SeekBar)

this

.findViewById(R.id.SeekBar01);

17

textView1 = (TextView)

this

.findViewById(R.id.TextView1);

18

textView2 = (TextView)

this

.findViewById(R.id.TextView2);

19

seekBar.setOnSeekBarChangeListener(

this

);

//添加事件监听

20

}

21

//拖动中

22

@Override

23

public

void

onProgressChanged(SeekBar seekBar,

int

progress,

24

boolean

fromUser) {

25

this

.textView1.setText(

"当前值:"

+progress);

26

27

}

28

//开始拖动

29

@Override

30

public

void

onStartTrackingTouch(SeekBar seekBar) {

31

this

.textView2.setText(

"拖动中..."

);

32

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}

34

//结束拖动

35

@Override

36

public

void

onStopTrackingTouch(SeekBar seekBar) {

37

this

.textView2.setText(

"拖动完毕"

);

38

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}

40

}