Why is setting a String in class not possible but getting the String possible?

The name of the pictureThe name of the pictureThe name of the pictureClash Royale CLAN TAG#URR8PPP

Why is setting a String in class not possible but getting the String possible?



My problem includes an Activity and a RecyclerViewAdapter.
I want to pass the Stringvalue of an Uri from my Activity to my RecyclerViewAdapter.
For passing I am using this Getter and Setter class:


Activity


RecyclerViewAdapter


Activity


RecyclerViewAdapter


public class updateDataAdapter

public String testurl;

public String getTesturl()
return testurl;

public void setTesturl(String testurl)
this.testurl = testurl;




The Recyclerview sends an intent with ((Activity) context).startActivityForResult(); and the Activity uses onActivityResult to receive the intent and RequestCode.


((Activity) context).startActivityForResult();


onActivityResult


intent



Code from Recyclerview .java:


Recyclerview .java


Intent intent = new Intent();

intent.setType("image/*");

intent.setAction(Intent.ACTION_GET_CONTENT);

((Activity) context).startActivityForResult(Intent.createChooser(intent, "Select Image From Gallery"), 1);



The Context is the Activity (Given as parameter at Setting the adapter).


Context


Activity



Code of onActivityResult in Activty:


onActivityResult


Activty


@Override
public void onActivityResult(int RC, int RQC, Intent I)

super.onActivityResult(RC, RQC, I);


if (RC == 1 && RQC == RESULT_OK && I != null && I.getData() != null)

Uri uri2 = I.getData();

updateDataAdapter updateDataAdapter = new updateDataAdapter();

try
updateDataAdapter.setTesturl(String.ValueOf(uri2));

catch(IOException e)
e.printStackTrace();




If I call getTesturl in my RecyclerViewAdapter the String is empty.


getTesturl


RecyclerViewAdapter



That's why I tried different things to locate the problem.



First I set (in my updateDataAdapter.java) public String testurl; to public String testurl = "This is my text"; and calling getTesturl receives the text "This is my text".


updateDataAdapter.java


public String testurl;


public String testurl = "This is my text";


getTesturl


setTesturl



So I tried to replace updateDataAdapter.setTesturl(String.ValueOf(uri2)); with updateDataAdapter.setTesturl("This is my text");


updateDataAdapter.setTesturl(String.ValueOf(uri2));


updateDataAdapter.setTesturl("This is my text");



But in this case the String is empty.



How can I solve the problem and why is my code not working?



Please help me.




2 Answers
2



'updateDataAdapter' should declared class member variable.


if (RC == 1 && RQC == RESULT_OK && I != null && I.getData() != null)

Uri uri2 = I.getData();

updateDataAdapter updateDataAdapter = new updateDataAdapter();

try
updateDataAdapter.setTesturl(String.ValueOf(uri2));

catch(IOException e)
e.printStackTrace();

}



Here you create a new updateDataAdapter. Replace the newly created updateDataAdapter with the existing RecyclerViewAdapter.


updateDataAdapter


updateDataAdapter


RecyclerViewAdapter






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