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I have been having issues with formatting, in the sense that my code is not properly formatted. I tried performing right click -> source -> format, a function of my SDK that auto-formats curly braces), and I tried reorganizing things, but my attempts haven't been too successful.
In the following lines
SeekBar seekBar = (SeekBar) findViewById(R.id.seekBarDistance);
final TextView seekBarValue = (TextView) findViewById(R.id.seekBarDistanceValue);
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
seekBarValue.setText(String.valueOf(progress));
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}
It really depends on the IDE you are using and I know from my experience with using Eclipse that it does a nice job of formatting code for you, but only if there are no errors in your code. Check and make sure that you do not have any errors and it should work.
SeekBar seekBar = (SeekBar) findViewById(R.id.seekBarDistance);
final TextView seekBarValue = (TextView) findViewById(R.id.seekBarDistanceValue);
seekBar.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {
#Override
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// TODO Auto-generated method stub
seekBarValue.setText(String.valueOf(progress));
}
#Override
public void onStartTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
});
You have an anonymous inner class and you didn't close your ) bracket
#Override
public void onStopTrackingTouch(SeekBar seekBar) {
// TODO Auto-generated method stub
}
}); // Add this
Related
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
int[] etColorId = new int[] {R.id.etColor1, R.id.etColor2, R.id.etColor3, R.id.etColor4, R.id.etColor5,
R.id.etColor6, R.id.etColor7, R.id.etColor8, R.id.etColor9, R.id.etColor10, R.id.etColor11,
R.id.etColor12, R.id.etColor13, R.id.etColor14, R.id.etColor15};
for (int editText : etColorId) {
findViewById(editText).setOnFocusChangeListener(new OnFocusChangeListener() {
#Override
public void onFocusChange(View v, boolean hasFocus) {
// TODO Auto-generated method stub
v.setEnabled(false);
}
});
}
int[] btnEditId = new int[] {R.id.btnEdit1, R.id.btnEdit2, R.id.btnEdit3, R.id.btnEdit4, R.id.btnEdit5,
R.id.btnEdit6, R.id.btnEdit7, R.id.btnEdit8, R.id.btnEdit9, R.id.btnEdit10, R.id.btnEdit11,
R.id.btnEdit12, R.id.btnEdit13, R.id.btnEdit14, R.id.btnEdit15};
for (int button : btnEditId) {
findViewById(button).setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
v.setEnabled(true);
v.requestFocus();
}
});
}
How can I gain focus to EditText upon clicking a button? I have a bunch of EditTexts and Buttons. Each button corresponds to a specific EditText. What I want is, for example: if I clicked the button1, the EditText1 will be focused. And then when I click other button, the EditText corresponds to that button will be focused and then the other EditTexts will be disabled.
This code for OnFocusChangeListener has to be modified little bit, for anonymous classes you need to have final reference of any object which you wish to modify, since you want to modify EditText
final int[] etColorId = new int[] {R.id.etColor1, R.id.etColor2, R.id.etColor3, R.id.etColor4, R.id.etColor5,
R.id.etColor6, R.id.etColor7, R.id.etColor8, R.id.etColor9, R.id.etColor10, R.id.etColor11,
R.id.etColor12, R.id.etColor13, R.id.etColor14, R.id.etColor15};
Now for OnClickListener do like this
for (int i=0;i<btnEditId.length;i++)
{
final int counter=i;
int button=btnEditId[i];
findViewById(button).setOnClickListener(new OnClickListener()
{
#Override
public void onClick(View v)
{
// HERE v refers to button itself on which you clicked,
// you need to update get edit text so
// based on ith position accessing the same edit as the button correspond too
EditText edt=etColorId[counter];
edt.setEnabled(true);
edt.requestFocus();
// and you are DONE!!!
}
});
}
UPDATE:
new OnFocusChangeListener()
{
#Override
public void onFocusChange(View v, boolean hasFocus)
{
if(!hasFocus)
{ // lost focus
v.setEnabled(false);
}
else
{
//you are already enabling on button click
}
}
});
Inside
onClick()
{
edittext.setFocusableInTouchMode(true);
edittext.requestFocus();
}
onFocusChange called every time when lost focus and gain focus.
#Override
public void onFocusChange(View v, boolean hasFocus) {
// TODO Auto-generated method stub
v.setEnabled(false);
}
So, first you need to change code
#Override
public void onFocusChange(View v, boolean hasFocus) {
// TODO Auto-generated method stub
if(hasFocus) {// gain focus
// Code block
}
if(!hasFocus) { // lost focus
// Code block
}
}
You EditText is disabled every time, when press Button
I tried placing the interface in my Activity, my fragment and my FragmentStatePagerAdapter. But in all of them the code never got there. this is what my FragmentStatePagerAdapter looks like since this is my latest try.
FragmentStatePagerAdapter :
public static class AppSectionsPagerAdapter extends FragmentStatePagerAdapter implements OnPageChangeListener
{
......
......
#Override
public void onPageScrollStateChanged(int arg0)
{
// TODO Auto-generated method stub
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2)
{
// TODO Auto-generated method stub
}
#Override
public void onPageSelected(int arg0)
{
// TODO Auto-generated method stub
Log.w("onpage", "onpage executed");
currentSelectedFragmentPosition = arg0;
}
public int getCurrentSelectedFragmentPosition()
{
return currentSelectedFragmentPosition;
}
}
Fragment would look like this :
public class SectionFragment extends ListFragment implements OnPageChangeListener
{
......
......
#Override
public void onPageScrollStateChanged(int arg0)
{
// TODO Auto-generated method stub
}
#Override
public void onPageScrolled(int arg0, float arg1, int arg2)
{
// TODO Auto-generated method stub
}
#Override
public void onPageSelected(int arg0)
{
// TODO Auto-generated method stub
Log.w("onpage", "onpage executed");
currentSelectedFragmentPosition = arg0;
}
public int getCurrentSelectedFragmentPosition()
{
return currentSelectedFragmentPosition;
}
}
But both didnt work, it would be most usefull to me to use it in a fragment but if that is not possible then the activity or statepager will work too
In AppSectionsPagerAdapter constructor: add this
mViewPager.setOnPageChangeListener(this);
(this assume the ViewPager is an instance variable named mViewPager)
Or, as an alternative in the MainActivity.onCreate() :
mViewPager.setOnPageChangeListener(mAppSectionPageAdapter);
(this assume the AppSectionPageAdapter is in a variable named mAppSectionPageAdapter)
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.
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"