20180731
-----Toast-Context-----
-----MainActivity-----
package jp.co.wata.myapplication;
import android.content.Context;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
new Cat().say(this);
}
}
class Cat{
void say(Context context) {
Toast.makeText(context, "mew...",Toast.LENGTH_SHORT).show();
}
}
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