本文实例为大家分享了Android拖动条的具体代码,供大家参考,具体内容如下
activity_main.xml
<?xml version="1.0" encoding="utf-8"?> <android.support.constraint.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/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="当前值:50" android:textSize="16sp" android:paddingTop="40dp" android:paddingLeft="15dp" tools:layout_editor_absoluteY="0dp" tools:layout_editor_absoluteX="0dp" /> <!-- 拖动条 --> <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.java
package 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;//拖动条 @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("当前值:"+progress); } @Override public void onStartTrackingTouch(SeekBar seekBar) { Toast.makeText(MainActivity.this,"开始滑动",Toast.LENGTH_SHORT).show(); } @Override public void onStopTrackingTouch(SeekBar seekBar) { Toast.makeText(MainActivity.this,"结束滑动",Toast.LENGTH_SHORT).show(); } }); } }
效果图:
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持。