如何设置搜索栏的最小值和最大值

Question

I have a seekbar and trying to set the value from 60 to 180 for one and 40 to 190 for the second one in step of 1.

sb1 = (SeekBar) findViewById(R.id.progresss);
        sb1.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {       

            @Override       
            public void onStopTrackingTouch(SeekBar seekBar) {      
                // TODO Auto-generated method stub
                //int inVal = Integer.parseInt(String.valueOf(seekBar.getProgress()));
                //inVal =+ 70;
                //Toast.makeText(getApplicationContext(), String.valueOf(inVal),Toast.LENGTH_LONG).show();
            }       

            @Override       
            public void onStartTrackingTouch(SeekBar seekBar) {     
                // TODO Auto-generated method stub      
            }       

            @Override       
            public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {     
                // TODO Auto-generated method stub
                progress =+ 70;
                Toast.makeText(getApplicationContext(), String.valueOf(progress),Toast.LENGTH_LONG).show();

            }       
        });

is not working. Any idea how to fix it?

Answer 1

You cannot set the min value of a SeekBar (always 0) and you cannot set the step value of a SeekBar (always 1).

To set the value from 60 to 180 with a step of 1 :

int step = 1;
int max = 180;
int min = 60;

// Ex : 
// If you want values from 3 to 5 with a step of 0.1 (3, 3.1, 3.2, ..., 5)
// this means that you have 21 possible values in the seekbar.
// So the range of the seek bar will be [0 ; (5-3)/0.1 = 20].
seekbar.setMax( (max - min) / step );


seekbar.setOnSeekBarChangeListener(
    new OnSeekBarChangeListener()
    {
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {}

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {}

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, 
            boolean fromUser) 
        {
            // Ex :
            // And finally when you want to retrieve the value in the range you
            // wanted in the first place -> [3-5]
            //
            // if progress = 13 -> value = 3 + (13 * 0.1) = 4.3
            double value = min + (progress * step);

        }
    }
);

I put another example within the code so that you understand the math.

Answer 2

You can set max value for your seekbar by using this code:

    sb1.setMax(100);

This will set the max value for your seekbar.

But you cannot set the minimum value but yes you can do some arithmetic to adjust value. Use arithmetic to adjust your application-required value.

For example, suppose you have data values from -50 to 100 you want to display on the SeekBar. Set the SeekBar's maximum to be 150 (100-(-50)), then subtract 50 from the raw value to get the number you should use when setting the bar position.

You can get more info via this link .

Answer 3

seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress,
                    boolean fromUser) {

                int MIN = 5;
                if (progress < MIN) {

                    value.setText(" Time Interval (" + seektime + " sec)");
                } else {
                    seektime = progress;
                }
                value.setText(" Time Interval (" + seektime + " sec)");

            }
        });

Answer 4

The easiest way to set a min and max value to a seekbar for me: if you want values min=60 to max=180, this is equal to min=0 max=120. So in your seekbar xml set property:

android:max="120"

min will be always 0 .

Now you only need to do what your are doing, add the amount to get your translated value in any change, in this case +60.

    seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            int translatedProgress = progress + 60;
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
        }
    });

Be careful with the seekbar property android:progress, if you change the range you must recalculate your initial progress. If you want 50%, max/2, in my example 120/2 = 60;

Answer 5

Seek Bar has methods for setting max values but not for setting min value here i write a code for setting minimum seek bar value when we add this code then your seek bar values not less then mim value try this its work fine for me

/* This methods call after seek bar value change */

            public void onProgressChanged(SeekBar seekBar, int progress,
                boolean fromUser) {
            /* Check the current seekbar value is greather than min value*/
            if (progress < MIN_VALUE) {
                /* if seek bar value is lesser than min value then set min value to seek bar */
                seekBar.setProgress(MIN_VALUE);
            }

        }

Answer 6

If you are using the AndroidX libraries ( import androidx.preference.* ), this functionality exists without any hacky workarounds!

    val seekbar = findPreference("your_seekbar") as SeekBarPreference
    seekbar.min = 1
    seekbar.max = 10
    seekbar.seekBarIncrement = 1

Answer 7

For requirements like this I have created Utility to customize Seekbar progress like below code:

SeekBarUtil.class

   import android.widget.SeekBar;
import android.widget.TextView;

public class SeekBarUtil {

    public static void setSeekBar(SeekBar mSeekbar, int minVal, int maxVal, int intervalVal, final TextView mTextView, String startPrefix, String endSuffix) {

        int totalCount = (maxVal - minVal) / intervalVal;
        mSeekbar.setMax(totalCount);
        mSeekbar.setOnSeekBarChangeListener(new CustomSeekBarListener(minVal, maxVal, intervalVal) {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                //progress = ((int)Math.round(progress/interval))*interval;
                int val = min;
                if (interval == totalCount) {
                    val = max;
                } else {
                    val = min + (progress * interval);
                }
                seekBar.setProgress(progress);
                mTextView.setText(startPrefix + val + endSuffix);
            }
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {  }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {   }
        });

    }
}

and CustomSeekBarListener.class

import android.widget.SeekBar;

class CustomSeekBarListener implements SeekBar.OnSeekBarChangeListener {
    int min=0,max=0,interval=1;
    int totalCount;
    public CustomSeekBarListener(int min, int max, int interval) {
        this.min = min;
        this.max = max;
        this.interval = interval;
        totalCount= (max - min) / interval;
    }
    @Override
    public void onProgressChanged(SeekBar seekBar, int i, boolean b) { }
    @Override
    public void onStartTrackingTouch(SeekBar seekBar) { }
    @Override
    public void onStopTrackingTouch(SeekBar seekBar) { }
}

and you can use it like below code snippet

SeekBarUtil.setSeekBar(seekbarAmountNeeded,10000,200000,5000,textAmount,"$"," PA");

Answer 8

Another solution to handle this case is creating a customized Seekbar, to get ride of converting the real value and SeekBar progress every time:

import android.content.Context
import android.util.AttributeSet
import android.widget.SeekBar

//
// Require SeekBar with range [Min, Max] and INCREMENT value,
// However, Android Seekbar starts from 0 and increment is 1 by default, Android supports min attr on API 26,
// To make a increment & range Seekbar, we can do the following conversion:
//
//     seekbar.setMax((Max - Min) / Increment)
//     seekbar.setProgress((actualValue - Min) / Increment)
//     seekbar.getProgress = Min + (progress * Increment)
//
// The RangeSeekBar is responsible for handling all these logic inside the class.

data class Range(val min: Int, val max: Int, private val defaultIncrement: Int) {
    val increment = if ((max - min) < defaultIncrement) 1 else defaultIncrement
}


internal fun Range.toSeekbarMaximum(): Int = (max - min) / increment


class RangeSeekBar: SeekBar, SeekBar.OnSeekBarChangeListener {

    constructor(context: Context) : super(context)
    constructor(context: Context, attrs: AttributeSet) : super(context, attrs)

    var range: Range = Range(0, 100, 1)
        set(value) {
            field = value
            max = value.toSeekbarMaximum()
        }

    var value: Int = 0
        get() = range.min + progress * range.increment
        set(value) {
            progress = (value - range.min) / range.increment
            field = value
        }

    var onSeekBarChangeListenerDelegate: OnSeekBarChangeListener? = this

    override fun setOnSeekBarChangeListener(l: OnSeekBarChangeListener?) {
        onSeekBarChangeListenerDelegate = l
        super.setOnSeekBarChangeListener(this)
    }

    override fun onProgressChanged(seekBar: SeekBar?, progress: Int, fromUser: Boolean) {
        onSeekBarChangeListenerDelegate?.onProgressChanged(seekBar, value, fromUser)
    }

    override fun onStartTrackingTouch(seekBar: SeekBar?) {
        onSeekBarChangeListenerDelegate?.onStartTrackingTouch(seekBar)
    }

    override fun onStopTrackingTouch(seekBar: SeekBar?) {
        onSeekBarChangeListenerDelegate?.onStopTrackingTouch(seekBar)
    }
}

Then in your fragment,

    // init
    range_seekbar.range = Range(10, 110, 10)
    range_seekbar.value = 20

    // observe value changes
    range_seekbar.userChanges().skipInitialValue().subscribe {
        println("current value=$it")
    }

Keywords: Kotlin, range SeekBar, Rx

Answer 9

You can use Material design sliders instead of seekbar

<com.google.android.material.slider.Slider
    ...
    android:valueFrom="60"
    android:valueTo="180"
    android:stepSize="10.0"  />'

for more check here https://material.io/components/sliders/android

Answer 10

Set seekbar max and min value

seekbar have method that setmax(int position) and setProgress(int position)

thanks

Answer 11

Copy this class and use custom Seek Bar :

public class MinMaxSeekBar extends SeekBar implements SeekBar.OnSeekBarChangeListener {
private OnMinMaxSeekBarChangeListener onMinMaxSeekBarChangeListener = null;
private int intMaxValue = 100;
private int intPrgress = 0;
private int minPrgress = 0;


public int getIntMaxValue() {
    return intMaxValue;
}

public void setIntMaxValue(int intMaxValue) {
    this.intMaxValue = intMaxValue;
    int middle = getMiddle(intMaxValue, minPrgress);
    super.setMax(middle);
}

public int getIntPrgress() {
    return intPrgress;
}

public void setIntPrgress(int intPrgress) {
    this.intPrgress = intPrgress;
}

public int getMinPrgress() {
    return minPrgress;
}

public void setMinPrgress(int minPrgress) {
    this.minPrgress = minPrgress;
    int middle = getMiddle(intMaxValue, minPrgress);
    super.setMax(middle);
}

private int getMiddle(int floatMaxValue, int minPrgress) {
    int v = floatMaxValue - minPrgress;
    return v;
}

public MinMaxSeekBar(Context context, AttributeSet attrs) {
    super(context, attrs);
    this.setOnSeekBarChangeListener(this);
}

public MinMaxSeekBar(Context context) {
    super(context);
    this.setOnSeekBarChangeListener(this);
}

@Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
    intPrgress = minPrgress + i;
    onMinMaxSeekBarChangeListener.onMinMaxSeekProgressChanged(seekBar, intPrgress, b);
}

@Override
public void onStartTrackingTouch(SeekBar seekBar) {
    onMinMaxSeekBarChangeListener.onStartTrackingTouch(seekBar);

}

@Override
public void onStopTrackingTouch(SeekBar seekBar) {
    onMinMaxSeekBarChangeListener.onStopTrackingTouch(seekBar);
}

public static interface OnMinMaxSeekBarChangeListener {
    public void onMinMaxSeekProgressChanged(SeekBar seekBar, int i, boolean b);

    public void onStartTrackingTouch(SeekBar seekBar);

    public void onStopTrackingTouch(SeekBar seekBar);
}

public void setOnIntegerSeekBarChangeListener(OnMinMaxSeekBarChangeListener floatListener) {
    this.onMinMaxSeekBarChangeListener = floatListener;
}
}

This class contin method public void setMin(int minPrgress) for setting minimum value of Seek Bar This class contin method public void setMax(int maxPrgress) for setting maximum value of Seek Bar

Answer 12

Min-value will always start at zero and its nothing you can do about it. But you can change its value when user start scrolling it around.

Here I set the max-value as 64. This calculations are simple: I want the user to pick a time from 15min to 16 hours, and he picks one of every 15min to 16 hours, clear? I know, very simple :)

    SeekBar seekBar = (SeekBar) dialog.findViewById(R.id.seekBar);
    seekBar.setMax(64);

    seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        float b;

        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            float des = (float) progress / 4;
            b = des;
            hours.setText(des + " hours");
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {


        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            hoursSelected = b;
        }
    });

Answer 13

    private static final int MIN_METERS = 100;
    private static final int JUMP_BY = 50;

    metersText.setText(meters+"");
    metersBar.setProgress((meters-MIN_METERS));
    metersBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub
        }
        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {
            // TODO Auto-generated method stub
        }
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress,boolean fromUser) {
            progress = progress + MIN_METERS;
            progress = progress / JUMP_BY;
            progress = progress * JUMP_BY;
            metersText.setText((progress)+"");
        }
    });
}

Answer 14

    paySeekRange.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
        @Override
        public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
            Debug.i(TAG, "onProgressChanged 1: " + progress);
            int progressMin = (progress * (maxPayRange - minPayRange) / 100) + minPayRange;
            Debug.i(TAG, "onProgressChanged 2: " + progress);
            int progressMax = (progress * (maxPayRange) / 100);
            progress = (progress * (progressMax - progressMin) / 100) + progressMin;
            Debug.i(TAG, "onProgressChanged 3: " + progress);
            txtWeeklyPay.setText("$".concat(String.valueOf(progress)));
        }

        @Override
        public void onStartTrackingTouch(SeekBar seekBar) {

        }

        @Override
        public void onStopTrackingTouch(SeekBar seekBar) {

        }
    });

Answer 15

There is no option to set a min or max value in seekbar , so you can use a formula here to scale your value.

Desired_value = ( progress * ( Max_value - Min_value) / 100 ) + Min_value

I have tested this formula in many examples. In your example, if the progressBar is the middle(ie progress = 50 ) and your Min_val and Max_val are 60 and 180 respectively, then this formula will give you the Desired_value '120'.