Android – How to get the row id of a particular selected row

androidandroid-layoutandroid-tablelayout

I have added two TableRows to TableLayout that is in a for loop. In every first TableRow there are 6 TextViews and 1 ImageView & 1 Toggle Button. I have added an OnClickListener to the first row & Toggle Button. My question is in the onclick method for the First Row, how should I get the row id of that particular selected row?

Can someone help me?

Plz help me…..

I want to get the row id of a particular selected row……

Plz anyone reply me….

Best Answer

Navigate through the View hierarchy in the ImageView OnCLickListener like this:

imageView.setOnClickListener(new OnClickListener() {

     public void onCLick(View v) {
          // v represents the view that was clicked(the ImageView)
          // if the ImageView is added directly to the TableRow then you could simply do
          TableRow tr = (TableRow) v.getParent(); // if the ImageView isn't a direct child of the TableRow then walk through all the parent with getParent().
          // do stuff 
     }

});

Edit :

Your code doesn't help and by looking at what you're doing I would advise you to start with something a little simpler to learn about android. Also, tabLayout.addView(openedRow1, n_D); doesn't add a tag to the openedRow1 View(if this is what you want to do), it just position that View to the specific position in the parent(like 0 to be the first child of the parent).

I would guess that you're trying to get the text from the second TextView( tv_vin_val ?!?!) when it's parent is clicked. If this is all you want to do then try something like this:

 public void onClick(View v) {
        // you set the listener on the TableRow so v is the TableRow that was clicked 
        TableRow lTableRow = ((TableRow) v);                                
        // to get the TextView use getChildAt or findViewById
        TextView lTextView = (TextView)lTableRow.getChildAt(1);
        //get the text from the TextView  
        vinNum = lTextView.getText().toString();
        // the tag
        int theTag = (Integer) v.getTag();          
        Intent intent = new Intent(DeliveryInspectionActivity.this, ExceptionsActivity.class);
        //intent.putExtra("row id value", theTag);
        startActivityForResult(intent, 0);
 }

Related Solutions

Android – How to save an activity state using the save instance state

You need to override onSaveInstanceState(Bundle savedInstanceState) and write the application state values you want to change to the Bundle parameter like this:

@Override
public void onSaveInstanceState(Bundle savedInstanceState) {
  super.onSaveInstanceState(savedInstanceState);
  // Save UI state changes to the savedInstanceState.
  // This bundle will be passed to onCreate if the process is
  // killed and restarted.
  savedInstanceState.putBoolean("MyBoolean", true);
  savedInstanceState.putDouble("myDouble", 1.9);
  savedInstanceState.putInt("MyInt", 1);
  savedInstanceState.putString("MyString", "Welcome back to Android");
  // etc.
}

The Bundle is essentially a way of storing a NVP ("Name-Value Pair") map, and it will get passed in to onCreate() and also onRestoreInstanceState() where you would then extract the values from activity like this:

@Override
public void onRestoreInstanceState(Bundle savedInstanceState) {
  super.onRestoreInstanceState(savedInstanceState);
  // Restore UI state from the savedInstanceState.
  // This bundle has also been passed to onCreate.
  boolean myBoolean = savedInstanceState.getBoolean("MyBoolean");
  double myDouble = savedInstanceState.getDouble("myDouble");
  int myInt = savedInstanceState.getInt("MyInt");
  String myString = savedInstanceState.getString("MyString");
}

Or from a fragment.

@Override
public void onViewStateRestored(@Nullable Bundle savedInstanceState) {
    super.onViewStateRestored(savedInstanceState);
    // Restore UI state from the savedInstanceState.
    // This bundle has also been passed to onCreate.
    boolean myBoolean = savedInstanceState.getBoolean("MyBoolean");
    double myDouble = savedInstanceState.getDouble("myDouble");
    int myInt = savedInstanceState.getInt("MyInt");
    String myString = savedInstanceState.getString("MyString");
}

You would usually use this technique to store instance values for your application (selections, unsaved text, etc.).

Android – How to get screen dimensions as pixels in Android

If you want the display dimensions in pixels you can use getSize:

Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
int width = size.x;
int height = size.y;

If you're not in an Activity you can get the default Display via WINDOW_SERVICE:

WindowManager wm = (WindowManager) context.getSystemService(Context.WINDOW_SERVICE);
Display display = wm.getDefaultDisplay();

If you are in a fragment and want to acomplish this just use Activity.WindowManager (in Xamarin.Android) or getActivity().getWindowManager() (in java).

Before getSize was introduced (in API level 13), you could use the getWidth and getHeight methods that are now deprecated:

Display display = getWindowManager().getDefaultDisplay(); 
int width = display.getWidth();  // deprecated
int height = display.getHeight();  // deprecated

For the use case, you're describing, however, a margin/padding in the layout seems more appropriate.

Another way is: DisplayMetrics

A structure describing general information about a display, such as its size, density, and font scaling. To access the DisplayMetrics members, initialize an object like this:

DisplayMetrics metrics = new DisplayMetrics();
getWindowManager().getDefaultDisplay().getMetrics(metrics);

We can use widthPixels to get information for:

"The absolute width of the display in pixels."

Example:

Log.d("ApplicationTagName", "Display width in px is " + metrics.widthPixels);

API level 30 update

final WindowMetrics metrics = windowManager.getCurrentWindowMetrics();
 // Gets all excluding insets
 final WindowInsets windowInsets = metrics.getWindowInsets();
 Insets insets = windowInsets.getInsetsIgnoreVisibility(WindowInsets.Type.navigationBars()
         | WindowInsets.Type.displayCutout());

 int insetsWidth = insets.right + insets.left;
 int insetsHeight = insets.top + insets.bottom;

 // Legacy size that Display#getSize reports
 final Rect bounds = metrics.getBounds();
 final Size legacySize = new Size(bounds.width() - insetsWidth,
         bounds.height() - insetsHeight);

Best Answer

Related Solutions

Android – How to save an activity state using the save instance state

Android – How to get screen dimensions as pixels in Android

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