Intent 간단한 예제-1

 

 

 

 

 

String값을 전달받아 intent로 MainAcitivty2에 넘겨준다.

전달받은 intent값을 그 액티비티에서 호출한다.

 

MainAcitity

package kr.teamcadi.intentactivity;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        Button btn = (Button)findViewById(R.id.btn_intent);
        btn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(MainActivity.this,MainActivity2.class);
                intent.putExtra("key","Hi SEUNGWON");
                startActivity(intent);
                finish();
            }
        });
    }
}

 

MainActivity2

package kr.teamcadi.intentactivity;

import androidx.appcompat.app.AppCompatActivity;

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;

public class MainActivity2 extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main2);

        Button btn2 =(Button)findViewById(R.id.btn_int2);
        final TextView textView = (TextView) findViewById(R.id.textView);

        btn2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                Intent intent2 =getIntent();
                String txt =intent2.getStringExtra("key");
                if(txt !=null)
                    textView.setText(txt);
            }
        });
    }
}