Android- Loop over IDs with Java

Question

I wanted to find different TextViews, which are depending on an integer.

Let's say I have got three TextViews:

<TextView
 android:id="@+id/text1" 
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"/>

<TextView
 android:id="@+id/text2" 
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"/>

<TextView
 android:id="@+id/text3" 
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"/>

And in my MainActivity I have got following:

String resourceText = "R.id.text";
int textCounter = 1;
TextView text1 = (TextView) findViewById(resourceText + textCounter);

So the result should be that I am able to access different TextViews over the textCounter but it doesn't work.

But using this code gives me an error which says that the findViewByID function expects an integer.

Answer 1

You can use getIdentifier() to convert string version of a resource id . You just need to modify your code in this way.

String resourceText = "R.id.text";
int textCounter = 1;
textViewResId=getResources().getIdentifier(resourceText+textCounter, "id", getPackageName());
TextView text1 = (TextView) findViewById(textViewResId);