<ImageView
android:id="@+id/imageview"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:src="@drawable/image"
android:scaleType="fitStart"
/>
package com.example.practice5;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.view.View;
public class MainActivity extends Activity implements OnClickListener{
private Button button1;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
button1=(Button)findViewById(R.id.button1);
button1.setOnClickListener(this);
}
public void onClick(View v){
Intent intent = new Intent(this, SubActivity.class);
startActivity(intent);
}
}
package com.example.practice5;
import android.app.Activity;
import android.os.Bundle;
import android.widget.TextView;
public class SubActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
TextView tv = new TextView(this);
tv.setText("戻るボタンを押してみてください！");
setContentView(tv);
}
}
<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".MainActivity" >
<Button
android:id="@+id/button1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="35dp"
android:gravity="center"
android:text="Hello" />
</RelativeLayout>
