Question

I want to display an error message on an Android app screen after some error happens. So I put a string in my strings.xml file and in the code I’d simply like to tell the system to display that code.

But I am not entirely sure how to do that. I have something like this that I scribbled:

TextView errorMessage = (TextView) findViewById(R.id.add_problem_validation_error);
    errorMessage.setText(R.string.add_problem_validation_error);

But its not even compiling because I am not sure how to properly refer to the string.xml items and display them.

Any idea how to do this the right way?

Thanks!

Answer 1

Why not just use a Toast?

Toast.makeText(getApplicationContext(),
           R.string.add_problem_validation_error, Toast.LENGTH_LONG).show();

Or you could use a alert dialog..

AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(R.string.add_problem_validation_error)
   .setCancelable(false)
   .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog, int id) {
            MyActivity.this.finish();
       }
   })
   .setNegativeButton("No", new DialogInterface.OnClickListener() {
       public void onClick(DialogInterface dialog, int id) {
            dialog.cancel();
       }
   });
AlertDialog alert = builder.create();