Android Multi Stato interruttore

Question

ho voluto creare qualcosa di simile a questo dispositivo di scorrimento:

c'è un modo in Android per definire un cursore tre stato? Sono nuovo nello sviluppo di Android, quindi per favore includi il maggior numero possibile di codice di esempio, sarebbe molto utile.

Answer 1

Un semplice esempio potrebbe essere come il seguente codice. Puoi giocare con la grafica un po 'e otterrai ciò che desideri.

layout/main.xml

<TableLayout xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/TableLayout1" 
    android:layout_width="match_parent" 
    android:layout_height="match_parent" 
    android:padding="10dp" > 

    <include 
     android:id="@+id/tableRow1_ref" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     layout="@layout/description" /> 

    <SeekBar 
     android:id="@+id/seekBar1" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_marginBottom="10dp" 
     android:layout_marginTop="10dp" 
     android:max="100" /> 

    <include 
     android:id="@+id/tableRow1_ref" 
     android:layout_width="wrap_content" 
     android:layout_height="wrap_content" 
     layout="@layout/description" /> 

    <SeekBar 
     android:id="@+id/seekBar2" 
     android:layout_width="match_parent" 
     android:layout_height="wrap_content" 
     android:layout_marginTop="10dp" 
     android:max="100" /> 

</TableLayout> 

layout/description.xml

<?xml version="1.0" encoding="utf-8"?> 
<TableRow xmlns:android="http://schemas.android.com/apk/res/android" 
    xmlns:tools="http://schemas.android.com/tools" 
    android:id="@+id/tableRow1" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" > 

    <TextView 
     android:id="@+id/textView1" 
     android:layout_width="0dp" 
     android:layout_height="wrap_content" 
     android:layout_weight="1" 
     android:gravity="left" 
     android:paddingLeft="5dp" 
     android:text="@string/kid" /> 

    <TextView 
     android:id="@+id/textView2" 
     android:layout_width="0dp" 
     android:layout_height="wrap_content" 
     android:layout_weight="1" 
     android:gravity="center" 
     android:text="@string/adult" /> 

    <TextView 
     android:id="@+id/textView3" 
     android:layout_width="0dp" 
     android:layout_height="wrap_content" 
     android:layout_weight="1" 
     android:gravity="right" 
     android:paddingRight="5dp" 
     android:text="@string/senior" /> 

</TableRow> 

MainActivity.java

package com.test.Slider; 

import android.os.Bundle; 
import android.support.v7.app.ActionBarActivity; 
import android.widget.SeekBar; 
import android.widget.SeekBar.OnSeekBarChangeListener; 

public class MainActivity extends ActionBarActivity 
     implements OnSeekBarChangeListener{ 

    SeekBar sb1, sb2; 

    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main); 

     sb1 = (SeekBar)findViewById(R.id.seekBar1); 
     sb2 = (SeekBar)findViewById(R.id.seekBar2); 

     sb1.setOnSeekBarChangeListener(this); 
     sb2.setOnSeekBarChangeListener(this); 
    } 

    @Override 
    public void onProgressChanged(SeekBar seekBar, int progress, 
      boolean fromUser) { 
     // we don't need it 
    } 

    @Override 
    public void onStartTrackingTouch(SeekBar seekBar) { 
     // we don't need it  
    } 

    @Override 
    public void onStopTrackingTouch(SeekBar seekBar) { 
     int mProgress = seekBar.getProgress(); 
     if(mProgress > 0 & mProgress < 26) { 
      seekBar.setProgress(0); 
     } else if(mProgress > 25 & mProgress < 76) { 
      seekBar.setProgress(50); 
     } else seekBar.setProgress(100); 
    } 
} 

uscita:

Answer 2

C'è una buona libreria per questo: android-comboseekbar. Usalo o guarda come funziona.

schermo