모바일 프로그래밍 실습 image - 참고할만한 괜찮은 소스

류지원 학생 소스 입니다.
스위치 on/off에 따라 나타나고 사라지게 할 위젯들을 하나의 LinearLayout 밑에 넣어서 코드를 간결히 하였군요.

	<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent"
	android:layout_height="match_parent" android:paddingLeft="@dimen/activity_horizontal_margin"
	android:paddingRight="@dimen/activity_horizontal_margin"
	android:paddingTop="@dimen/activity_vertical_margin"
	android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".MainActivity"
	android:orientation="vertical">
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textAppearance="?android:attr/textAppearanceLarge"
	android:text="@string/v_start"
	android:id="@+id/textView" />
	<Switch
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/v_started"
	android:id="@+id/switch1"
	android:textSize="20dp"
	android:checked="false"
	android:showText="true" />
	<LinearLayout
	android:orientation="vertical"
	android:layout_width="match_parent"
	android:layout_height="wrap_content"
	android:id="@+id/linear1"
	android:visibility="invisible">
	<TextView
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:textAppearance="?android:attr/textAppearanceLarge"
	android:text="@string/s_version"
	android:id="@+id/textView_android" />
	<RadioGroup
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:id="@+id/radioGroup1"
	>
	<RadioButton
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/v_jellybean"
	android:id="@+id/radioButton_jelly" />
	<RadioButton
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/v_kitkat"
	android:id="@+id/radioButton_kitkat" />
	<RadioButton
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/v_lollipop"
	android:id="@+id/radioButton_lolli" />
	<ImageView
	android:layout_width="200dp"
	android:layout_height="180dp"
	android:id="@+id/imageView" />
	<Button
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/v_exit"
	android:onClick="OnClick"
	android:id="@+id/button_exit" />
	<Button
	android:layout_width="wrap_content"
	android:layout_height="wrap_content"
	android:text="@string/v_restart"
	android:onClick="OnClick"
	android:id="@+id/button_restart" />
	</RadioGroup>
	</LinearLayout>
	</LinearLayout>

view raw image_activity_layout.xml hosted with ❤ by GitHub

	public class MainActivity extends AppCompatActivity {
	Button bnt_exit, bnt_restart;
	ImageView i_image;
	Switch switch_agree;
	RadioGroup rGroup;
	RadioButton rd_jelly, rd_kit, rd_lolli;
	LinearLayout linear1;
	@Override
	protected void onCreate(Bundle savedInstanceState) {
	super.onCreate(savedInstanceState);
	setContentView(R.layout.activity_main);
	bnt_exit = (Button) findViewById(R.id.button_exit);
	bnt_restart = (Button) findViewById(R.id.button_restart);
	i_image = (ImageView) findViewById(R.id.imageView);
	switch_agree = (Switch) findViewById(R.id.switch1);
	rGroup = (RadioGroup) findViewById(R.id.radioGroup1);
	rd_jelly = (RadioButton) findViewById(R.id.radioButton_jelly);
	rd_kit = (RadioButton) findViewById(R.id.radioButton_kitkat);
	rd_lolli = (RadioButton) findViewById(R.id.radioButton_lolli);
	linear1 = (LinearLayout) findViewById(R.id.linear1);
	switch_agree.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
	@Override
	public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
	if (switch_agree.isChecked() == true) {
	linear1.setVisibility(View.VISIBLE);
	} else {
	linear1.setVisibility(View.INVISIBLE);
	}
	}
	});
	rGroup.setOnCheckedChangeListener(new RadioGroup.OnCheckedChangeListener() {
	@Override
	public void onCheckedChanged(RadioGroup group, int checkedId) {
	switch (checkedId) {
	case R.id.radioButton_jelly:
	i_image.setImageResource(R.drawable.jellybean_);
	break;
	case R.id.radioButton_kitkat:
	i_image.setImageResource(R.drawable.kitkat_);
	break;
	case R.id.radioButton_lolli:
	i_image.setImageResource(R.drawable.lollipop_);
	break;
	}
	}
	});
	}
	public void OnClick(View v){
	switch(v.getId()){
	case R.id.button_exit:
	finish();
	break;
	case R.id.button_restart:
	Intent i = getBaseContext().getPackageManager()
	.getLaunchIntentForPackage( getBaseContext().getPackageName() );
	i.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
	startActivity(i);
	break;
	}
	}
	}

view raw image_MainActivity.java hosted with ❤ by GitHub