How to change Android SeekBar track start position

问题:

I'd like to set the SeekBars's track start position so it does not start from the left side of the seekbar, but form an arbitrary position. Here is a photoshop image how it should look like:

http://i.imgur.com/QCMEu.png

It should be just a graphical effect, the SeekBar's underlying logic is not changed.

I tried to change the Seekbar.getprogressDrawable.SetBounds() to change the track image position, but no luck.

回答1:

add this proprety

 android:progress="2" 

回答2:

You can set progress of SeekBar in xml as:

android:progress="10"
android:max="90" <!-- maximum seekbar progress -->

you can programmatically set the progress of SeekBar as:

seekBar.setProgress(10);

回答3:

May be your problem is similar to Seekbar for two values [-50, 0, 50].

Thanks to Commonsware to point to right direction. I wrote a class inspired by code.google.com/p/range-seek-bar) to get the solution.

https://github.com/vashisthg/StartPointSeekBar

回答4:

By Programatically,we can start the progress and set the maximum of seekbar progress.

//start from <starting value>
seekBar.setProgress(<strating_value>);

//Set to maximum Value<max_value>
seekBar.setMax(<max_value>);

回答5:

You can add this: android:rotation="180" to the XML and then the seekbar will flip the way you want

回答6:

Just faced the same problem. That's how I have solved it.

Assume, we need seekbar starting from 10 and ending at 150.

@Override
    protected void onCreate(Bundle savedInstanceState)
    {...
     yourSpinner = (Spinner) findViewById(R.id.your_spinner);
     yourSpinner.setMax(150 - 10);

     int newProgress;

     yourSpinner.setOnSeekBarChangeListener(new   SeekBar.OnSeekBarChangeListener()
        {
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
            {
                newProgress= 10 + progress;

                Toast.makeText(getApplicationContext(), String.valueOf(newProgress), Toast.LENGTH_LONG).show();
            }
        });
    }