<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<EditText //input text
android:id="@+id/et_test"
android:layout_width="200dp"
android:layout_height="wrap_content"/>
<Button //button
android:id="@+id/btn_move"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="이동"/>
</LinearLayout>
---------------------------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".SubActivity">
<TextView //text보기
android:id="@+id/tv_sub"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="30sp"
android:text="서브 액티비티 도착"/>
</LinearLayout>
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
package com.example.intentexample;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
public class MainActivity extends AppCompatActivity {
private Button btn_move;
private EditText et_test;
private String str;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
et_test = findViewById(R.id.et_test);
btn_move = findViewById(R.id.btn_move); //버튼 정보를 btn_move에 넣기
btn_move.setOnClickListener(new View.OnClickListener() { //button이 클릭되었을때
@Override
public void onClick(View view) {
str = et_test.getText().toString(); //우리가 입력한 텍스트를 toString으로 바꾸고 저장
Intent intent = new Intent(MainActivity.this , SubActivity.class); //화면 전환을 저장
intent.putExtra("str", str); //intent에 우리가 입력한 텍스트 str을 저장
startActivity(intent); // 액티비티 이동
}
});
}
}
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".SubActivity">
<TextView //text보여주기
android:id="@+id/tv_sub"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:textSize="30sp"
android:text="서브 액티비티 도착"/>
</LinearLayout>
------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
package com.example.intentexample;
import androidx.appcompat.app.AppCompatActivity;
import android.content.Intent;
import android.os.Bundle;
public class SubActivity extends AppCompatActivity {
private TextView tv_sub;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_sub);
tv_sub = findViewById(R.id.tv_sub);
Intent intent = getIntent();
String str = intent.getStringExtra( "str"); //우리가 입력한 input text를 불러와서 str에 저장
tv_sub.setText(str); // tv_sub에 우리가 입력한 text를 보여주도록 돌려줌
}
}
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