rasumus https://blog.hatena.ne.jp/rasumus/ rokkonet https://rasumus.hatenablog.com/ プログラミング 2019 May 03.FirstActivity.java（OnClickListener等は省略） public class FirstActivity extends AppCompatActivity { Button button1 = (Button) findViewById(R.id.button1); button1.setEnabled(true); TextView textView1 = (TextView) findViewById(R.id.textView1); textView1.setText("start") new SecondTask(this).exe… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Frasumus.hatenablog.com%2Fentry%2F2019%2F05%2F03%2F155300" title="android開発　メモリリークを防ぐWeakReference - rokkonet" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2019-05-03 15:53:00 rich https://rasumus.hatenablog.com/entry/2019/05/03/155300 1.0 100%