How can I print drawable images names

Question

I have a layout with 1 textview, 1 imageview and 1 button. And I have 5 pictures in drawable. Their names like image1, image2, image3... When I click button, button change random picture in drawable("image" + rand. numbers method) But I want to print changed image name to textview. How can I do it? *Briefly; Button Funcion: First print existing image > then change new random image. **I'm sorry for bad grammer..

public void onClick(View v) {
    ImageView img=(ImageView)findViewById(R.id.imageView1);
    Random rand = new Random();
    int rndInt = rand.nextInt(5) + 1;
    String drawableName = "image"+ rndInt;
    int resID = getResources().getIdentifier(drawableName, "drawable", getPackageName());
    img.setImageResource(resID);
};

No it's different? My question is, how can I print existing random picture name to textview after then I want to change new random image all of it in 1 button.. — Eren, Feb 03 '16 at 22:45
Eren, maybe if you show your code we'll understand better what you want — Gavriel, Feb 03 '16 at 22:46
public void onClick(View v) { ImageView img=(ImageView)findViewById(R.id.imageView1); Random rand = new Random(); int rndInt = rand.nextInt(5) + 1; String drawableName = "image"+ rndInt; int resID = getResources().getIdentifier(drawableName, "drawable", getPackageName()); img.setImageResource(resID); }; This code in my button. When I click button system change random image in my drawable folder. I want to print image name in the textview for example system change image2, image2 in the imageview now, I want to print textview to image2 i guess i can tell now — Eren, Feb 03 '16 at 23:02

Gavriel · Accepted Answer · 2016-02-04T17:12:16.330

With the following code you'll always see the currently displayed image's name:

String  lastImageName = "";

public void onClick(View v) {
    ImageView img=(ImageView)findViewById(R.id.imageView1);
    Random rand = new Random();
    int rndInt = rand.nextInt(5) + 1;
    String drawableName = "image"+ rndInt;
    int resID = getResources().getIdentifier(drawableName, "drawable", getPackageName());
    img.setImageResource(resID);

    // just set the text in the textview. You need to have it in your layout xml of course
    TextView textView = (TextView)findViewById(R.id.logoismi);
    textView.setText(lastImageName);

    lastImageName = drawableName;
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >

    <Button
        android:id="@+id/bos"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/dogru"
        android:layout_alignParentBottom="true"
        android:layout_alignParentRight="true"
        android:text="BOŞ" />

    <ImageView
        android:id="@+id/logolar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_above="@+id/bos"
        android:layout_marginBottom="70dp"
        android:maxHeight="800dp"
        android:maxWidth="800dp"      
        android:layout_centerInParent="true"
        android:scaleType="centerInside"
        android:src="@drawable/image1" />

    <TextView
        android:id="@+id/logoismi"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_below="@+id/dogru"
        android:layout_centerHorizontal="true"
        android:layout_marginTop="52dp"
        android:text="image1" />

</RelativeLayout>

Thanks Gavriel, but this code first change image after then print new image name. I need first existing image name after then change new image and loop... — Eren, Feb 03 '16 at 23:10
Actually I show you my project via teamviewer and we should talk live about it, it will be better i think. — Eren, Feb 03 '16 at 23:18
Gavriel, imagine it, my button name is "Correct!" we have an random image and I should print last image name to textview. We don't need new image name. We need before image name because it may be true, we can not say anything about the new image.. Maybe it will no correct.. — Eren, Feb 04 '16 at 17:05
Eren, see my edit. This will work as long as your activity is visible. If you want it to "remember" the lastImageName even if you click home or back button. then later open the app again, then you'll need to save lastImageName to SharedPreferences — Gavriel, Feb 04 '16 at 17:13

How can I print drawable images names

1 Answers1