روید باکس

package com.example.ali.myapplication;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.widget.Button;import android.widget.TextView;public class MyActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_my); final c1 fer=new c1(); Button b22=(Button)findViewById(R.id.btn1); b22.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View v) { TextView t1=(TextView)findViewById(R.id.txt2); t1.setText(fer.c1(4,5)); } }); //t1.setText( f...

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