Easier way to get view's Id (string) by its Id (int)

Question

I\'m new with android and java, so sorry if it\'s a too basic question but I\'ve tried to find a solution in the forums and google and I couldn\'t.

I have 24 buttons

Answer 1

   Use this Approach to get View Id by Programming .
  <TextView
    android:id="@+id/tv"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="Hello World!"
    />


    String id=getResources().getResourceEntryName(textView.getId());
    Toast.makeText(this,id,Toast.LENGTH_LONG).show();

You will get Result ; tv

Answer 2

It's a late answer but may useful someone looking out for a way to get the resource id (int) for any view / drawable / String programmatic.

image from res/drawable

int resID = getResources().getIdentifier("my_image", 
            "drawable", getPackageName());

view based on resource name

int resID = getResources().getIdentifier("my_resource", 
            "id", getPackageName());

string

int resID = getResources().getIdentifier("my_string", 
            "string", getPackageName()); 

Answer 3

You can check id of each button such way:

public void onClick(View v) {
    switch (v.getId()) {
    case R.id.add_04:
        Toast.makeText(MainActivity.this, "1", Toast.LENGTH_LONG).show();
        break;
    case R.id.add_05:
        Toast.makeText(MainActivity.this, "2", Toast.LENGTH_LONG).show();
        break;
    }
}

Answer 4

Kotlin version (from @gadget) as view extension:

val View.stringId: String
    get() {
        return if (this.id == -0x1)
            "no-id"
        else
            this.resources.getResourceName(this.id)
    }

Answer 5

You can put this toString() inside an Android View, it will return the String resource Id.

@Override
public String toString() {

    Context context;
    Resources r = null;

    context = getContext();

    if (context != null) {
        r = context.getResources();
    }

    String entryName = null;

    if (r != null)
        entryName = r.getResourceEntryName(getId());

    return entryName;
}

Answer 6

like this:

/**
 * @return "[package]:id/[xml-id]"
 * where [package] is your package and [xml-id] is id of view
 * or "no-id" if there is no id
 */
public static String getId(View view) {
    if (view.getId() == View.NO_ID) return "no-id";
    else return view.getResources().getResourceName(view.getId());
}

I use this in view constructors to make more meaningful TAGs