Question

TestaActivity.java

public class TestaActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tvText=(TextView)findViewById(R.id.textView1);
        tvText.setText("Sample");
    }
}

Print.java

public class Print {
    public Print(Context tempContext) {
        //I want to assign the value to the tvText from here
    }
}

In the above example, as you can see I have set the text in tvText to “Sample”. In the same way, I need to assign the textView1 ID with some value inside Print class, once it is created.

Please help me to figure out the way to do it.

Answer 1

try as:

public class Print {
 protected TestaActivity  context;
    public Print(Context tempContext) {

        context = tempContext;
    }
     public void changetextViewtext(final String msg){
            context.runOnUiThread(new Runnable() {

                @Override
                public void run() {
                //assign the value to the tvText from here
                    context.tvText.setText("Hello Test");    
                }
            });
        }
}

and call changetextViewtext from Activity for Changeing TextView Text from Print Class

public class TestaActivity extends Activity {
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        tvText=(TextView)findViewById(R.id.textView1);
        tvText.setText("Sample");
        Print  myPrint  = new Print(this);
            myPrint.changetextViewtext("Hello World !!!");
    }
}

as your need!!!!:)