I'm making a project - Android - Arduino.
I have a seekbar to handle the temperature, to set it to 20'-35'.
When i open the program i want the seekbar to be set to the temperature that the sensor is set, not to 0 and let me set it.
This is the code for my seekbar:
seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener()
{
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser)
{
tvTemp.setText(Double.toString(progress + 20));
}
public void onStartTrackingTouch(SeekBar seekBar) {}
public void onStopTrackingTouch(SeekBar seekBar) {}
});
<SeekBar
android:id="#+id/seek_bar"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:max="35"
android:progress="20" />
Through xml you can do it as :
android:progress="20" means 20 is default position. Starting point of seek bar.
Or in your code you can do it like:
your_seekBar.setProgress(start_position);
ie.your_seekBar.setProgress(20);
Then you can try :
your_seekBar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() {
int progressChanged = 0;
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser){
progressChanged = progress;
}
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
public void onStopTrackingTouch(SeekBar seekBar) {
Toast.makeText(your_activity.this,"seek bar progress:"+progressChanged,
Toast.LENGTH_SHORT).show();
}
});
Just add
seekBar.setProgress(value)
below
seekBar.setOnSeekBarChangeListener
If your value is between 20 and 35, you may also want to specify
android:max="35"
android:min="20"
for your seekbar in your xml layout
SeekBar is inherited from ProgressBar,
So you can use 'setProgress()' method to set progress on startup.
seekBar.setProgress(someValue);
it will work
You can set it in your xml file:
android:progress="20"
Related
I am trying to write a program in which I am deleting the seekbar if the seekbar is set to zero. So far, I have been able to remove the visibility of the seekbar from the android screen, but it is not deleted completely. Can anyone please hep me so that I can completely remove the seekbar when the position of the seekbar is set to zero.
Following is my code snippet:
sb.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
if(i==0)
{
sb.setVisibility(View.INVISIBLE);
}
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
You can use sb.setVisibility(View.GONE);
I need my seekbar to show 1 decimal, ex 4.5.
It show as a integer now.
seekBar.setProgress((int)Float.parseFloat(Item.getRating()));
Thx.
I think this help you
aSeekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
float value = ((float)progress / 10.0);
// value now holds the decimal value between 0.0 and 10.0 of the progress
// Example:
// If the progress changed to 45, value would now hold 4.5
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {}
});
I'm not able to get multiple SeekBar values in multiple TextViews by implementing OnSeekBarChangeListener interface.
By anonymous class I have implemented this but I want this way for my application.
seekBar1.setOnSeekBarChangeListener(this);
}
#Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
switch (seekBar.getId()){
case R.id.seek1:{
seek1Val=String.valueOf(2000+i*1000);
tvAmount.setText(seek1Val);}
break;
case R.id.seek2:{
seek2Val = String.valueOf(0+i*.5);
tvRate.setText(seek2Val);
}
break;
}
I expect output in each TextView for different SeekBar but value of progress I is taking same for every SeekBar.
better would be to add different setOnSeekBarChangeListener for each SeekBar.
Or if you don't want that then use tag instead id
Best would be:
seekBar1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
seek1Val=String.valueOf(2000+i*1000);
tvAmount.setText(seek1Val);}
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
seekBar2.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
seek2Val = String.valueOf(0+i*.5);
tvRate.setText(seek2Val);
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
});
I need to make multiple seek bar in the same Java class. However, I wonder do we need to set each setOnSeekBarChangeListener for each seek bar? The code seems too long if I am doing so (I need to create 10 seek bar in the same class). Is there any other solution which I can shorten the code? Thank you so much for helping. :)
Below is my code
private SeekBar seekbar,seekbar1;
private TextView a,b;
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.schiassess);
seekbar = (SeekBar) findViewById(R.id.delubar);
seekbar1 = (SeekBar) findViewById(R.id.disorbar);
a = findViewById(R.id.a);
b = findViewById(R.id.b);
seekbar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
int val = (progress * (seekBar.getWidth() - 2 * seekBar.getThumbOffset())) / seekBar.getMax();
progress++;
a.setText("" + progress);
a.setX(seekBar.getX() + val + seekBar.getThumbOffset() / 2);
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
});
seekbar1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
int val = (progress * (seekBar.getWidth() - 2 * seekBar.getThumbOffset())) / seekBar.getMax();
progress++;
b.setText("" + progress);
b.setX(seekBar.getX() + val + seekBar.getThumbOffset() / 2);
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
}
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
});
}
Follow the below steps it's simple
JUST IMPLEMENT SeekBar.OnSeekBarChangeListener in your class/fragment
public class Home extends AppCompatActivity implements SeekBar.OnSeekBarChangeListener {
}
You don't have to write new OnSeekBarChangeListener for Every Seekbar...
Just Implement
#Override
public void onProgressChanged(SeekBar seekBar, int i, boolean b) {
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
} to your Activity/Fragment..
Now you can check for the id and perform action according to it
How do I get values from a SeekBar?
I have a code of a class that has three SeekBars (PRICEbar)
I want to pass the values of these SeekBars to next Activity (screen)
as Intents
I know how toimplement OnClickListener but how can I extract the
values from the SeekBars?
ex: if PRICEbar is pointing to value 10 ... I need to get the value of 10
Filters.java
public class Filters extends Activity implements OnSeekBarChangeListener{
// declare text objects variables
private SeekBar PRICEbar;
private TextView PRICEtextProgress,DISTANCEtextProgress, RATINGtextProgress;
Button back;
/** Called when the activity is first created. */
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// load the layout
setContentView(R.layout.filters);
PRICEbar = (SeekBar)findViewById(R.id.PRICEseekBarID); // make seekbar object
PRICEbar.setOnSeekBarChangeListener(this);
PRICEbar.setOnSeekBarChangeListener(new 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) {
// TODO Auto-generated method stub
PRICEtextProgress = (TextView)findViewById(R.id.PRICEtextViewProgressID);
PRICEtextProgress.setText("Price:: Rs "+progress);
seekBar.setMax(100);
}
});
}
#Override
public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
if (seekBar == PRICEbar)
PRICEtextProgress.setText("Price:: Rs "+progress);
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}
The SeekBar class is a subclass of ProgressBar, which contains a getProgress() method.
Calling PRICEbar.getProgress() will return the value you are looking for.