xml과 java를 이용해 Activity를 추가해서 화면이동을 해본다
- second.xml과 third.xml을 추가하고 SecondActivity.java와 ThirdActivity.java를 추가한다
activity_main.xml
<?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="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical"
tools:context=".MainActivity">
<RadioGroup android:id="@+id/gradioGroup1"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RadioButton android:id="@+id/rdoSecond"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="Second 액티비티"/>
<RadioButton android:id="@+id/rdoThird"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:checked="true"
android:text="Third 액티비티"/>
</RadioGroup>
<Button android:id="@+id/btnNewActivity"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="새 화면 열기"/>
</LinearLayout>
second.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FF00">
<Button android:id="@+id/btnReturn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="돌아가기"/>
</LinearLayout>
third.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#00FFFF">
<Button android:id="@+id/btnReturn"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="돌아가기"/>
</LinearLayout>
SecondActivity.java
package com.example.boki.intentbasic;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class SecondActivity extends Activity {
@Override
protected void onCreate( Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.second);
Button btnReturn = (Button)findViewById(R.id.btnReturn);
btnReturn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
}
ThirdActivity.java
package com.example.boki.intentbasic;
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
public class ThirdActivity extends Activity {
@Override
protected void onCreate( Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.third);
Button btnReturn = (Button)findViewById(R.id.btnReturn);
btnReturn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
finish();
}
});
}
}
MainActivity.java
package com.example.boki.intentbasic;
import android.content.Intent;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RadioButton;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
setTitle("메인 액티비티 (수정)");
final RadioButton rdoSecond = (RadioButton) findViewById(R.id.rdoSecond);
Button btnNewActivity = (Button)findViewById(R.id.btnNewActivity);
btnNewActivity.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent;
if(rdoSecond.isChecked() == true) intent = new Intent(getApplicationContext(), SecondActivity.class);
else intent = new Intent(getApplicationContext(), ThirdActivity.class);
startActivity(intent);
}
});
}
}
- 추가적으로 새로운 액티비티를 추가했으면 manifest.xml에 추가해야 한다.
- activity 태그를 추가시켜준다
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.example.boki.intentbasic">
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:roundIcon="@mipmap/ic_launcher_round"
android:supportsRtl="true"
android:theme="@style/AppTheme">
<activity android:name=".MainActivity">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity android:name=".SecondActivity" android:label="Second 액티비티"/>
<activity android:name=".ThirdActivity" android:label="Thrid 액티비티"/>
</application>
</manifest>
실행화면
