20171121
///
Intent.ACTION_SENDTO
package jp.co.wata.myapplication;
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
public class MainActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sendEmail();
}
protected void sendEmail() {
Intent intent = new Intent();
intent.setAction(Intent.ACTION_SENDTO);
intent.setType("text/plain");
intent.setData(Uri.parse("mailto:kywata@gmail.com"));
intent.putExtra(Intent.EXTRA_SUBJECT, "タイトル");
intent.putExtra(Intent.EXTRA_TEXT, "本文です。");
// startActivity(intent);
startActivity(Intent.createChooser(intent, null));
}
}
20170302
import android.content.Intent;
import android.net.Uri;
import
android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
public class MainActivity extends AppCompatActivity
{
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Intent intent = new Intent(Intent.ACTION_VIEW,
Uri.parse("http://www.google.co.jp"));
startActivity(intent);
}
}
20160804
--- MainActivity ---
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout layout = new LinearLayout(this);
setContentView(layout);
Button button = new Button(this);
button.setText("To SubActivity");
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Intent intent = new Intent(MainActivity.this,SubActivity.class);
startActivity(intent);
}
});
layout.addView(button);
}
}
--- SubActivity ---
import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
public class SubActivity extends Activity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
LinearLayout layout = new LinearLayout(this);
setContentView(layout);
Button button = new Button(this);
button.setText("To MainActivity");
button.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
finish();
}
});
layout.addView(button);
}
}
Web表示 20160804
--- MainActivity ---
import android.app.Activity;
import android.content.Intent;
import android.net.Uri;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.LinearLayout;
import android.widget.Toast;
public class MainActivity extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Button btn = new Button(this);
btn.setText("Button");
LinearLayout layout = new LinearLayout(this);
layout.addView(btn, new LinearLayout.LayoutParams(
LinearLayout.LayoutParams.WRAP_CONTENT,
LinearLayout.LayoutParams.WRAP_CONTENT));
setContentView(layout);
btn.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse("http://www.google.co.jp"));
startActivity(intent);
}
});
}
}