【移動(dòng)應(yīng)用開發(fā)技術(shù)】Android中怎么實(shí)現(xiàn)一個(gè)拖動(dòng)條

【移動(dòng)應(yīng)用開發(fā)技術(shù)】Android中怎么實(shí)現(xiàn)一個(gè)拖動(dòng)條

本篇文章給大家分享的是有關(guān)Android中怎么實(shí)現(xiàn)一個(gè)拖動(dòng)條，在下覺得挺實(shí)用的，因此分享給大家學(xué)習(xí)，希望大家閱讀完這篇文章后可以有所收獲，話不多說，跟著在下一起來看看吧。activity_main.xml<?xml

version="1.0"

encoding="utf-8"?>

<android.support.constraint.ConstraintLayout

xmlns:android="/apk/res/android"

xmlns:app="/apk/res-auto"

xmlns:tools="/tools"

android:layout_width="match_parent"

android:layout_height="match_parent"

tools:context="com.amy.seekbartest.MainActivity">

<TextView

android:id="@+id/textView1"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="當(dāng)前值：50"

android:textSize="16sp"

android:paddingTop="40dp"

android:paddingLeft="15dp"

tools:layout_editor_absoluteY="0dp"

tools:layout_editor_absoluteX="0dp"

/>

<!--

拖動(dòng)條

-->

<SeekBar

android:id="@+id/seekBar1"

android:layout_height="wrap_content"

android:max="100"

android:layout_width="match_parent"

android:progress="50"

android:paddingTop="10dp"

tools:layout_editor_absoluteY="0dp"

tools:layout_editor_absoluteX="32dp"

/>

</android.support.constraint.ConstraintLayout>MainActivity.javapackage

com.amy.seekbartest;

import

android.support.v7.app.AppCompatActivity;

import

android.os.Bundle;

import

android.view.View;

import

android.widget.SeekBar;

import

android.widget.TextView;

import

android.widget.Toast;

public

class

MainActivity

extends

AppCompatActivity

{

private

SeekBar

seekBar;//拖動(dòng)條

@Override

protected

void

onCreate(Bundle

savedInstanceState)

{

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

final

TextView

result

=

(TextView)

findViewById(R.id.textView1);

seekBar

=

(SeekBar)

findViewById(R.id.seekBar1);

seekBar.setOnSeekBarChangeListener(new

SeekBar.OnSeekBarChangeListener()

{

@Override

public

void

onProgressChanged(SeekBar

seekBar,

int

progress,

boolean

fromUser)

{

result.setText("當(dāng)前值："+progress);

}

@Override

public

void

onStartTrackingTouch(SeekBar

seekBar)

{

Toast.makeText(MainActivity.this,"開始滑動(dòng)",Toast.LENGTH_SHORT).show();

}

@Override

public

void

onStopTrackingTouch(