「Android/非同期処理/HandlerRunnable」の版間の差分
提供: 初心者エンジニアの簡易メモ
(→サンプル(Runnableクラス切り分け)) |
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| 行1: | 行1: | ||
| + | ==サンプル== | ||
| + | <pre> | ||
| + | final TextView textView = findViewById(R.id.text1); | ||
| + | final Handler handler = new Handler(Looper.getMainLooper()); | ||
| + | new Thread(new Runnable() { | ||
| + | @Override | ||
| + | public void run() { | ||
| + | final String msg = "background exec"; | ||
| + | if (handler != null) { | ||
| + | handler.post(new Runnable() { | ||
| + | @Override | ||
| + | public void run() { | ||
| + | if (textView != null) { | ||
| + | textView.setText(msg); | ||
| + | } | ||
| + | } | ||
| + | }); | ||
| + | } | ||
| + | } | ||
| + | }).start(); | ||
| + | </pre> | ||
参考：https://qiita.com/8yabusa/items/f8c9bb7eb81175c49e97 | 参考：https://qiita.com/8yabusa/items/f8c9bb7eb81175c49e97 | ||
2020年8月7日 (金) 16:02時点における版
サンプル
final TextView textView = findViewById(R.id.text1);
final Handler handler = new Handler(Looper.getMainLooper());
new Thread(new Runnable() {
@Override
public void run() {
final String msg = "background exec";
if (handler != null) {
handler.post(new Runnable() {
@Override
public void run() {
if (textView != null) {
textView.setText(msg);
}
}
});
}
}
}).start();
参考：https://qiita.com/8yabusa/items/f8c9bb7eb81175c49e97
サンプル(Runnableクラス切り分け)
MainActivity.java
final TextView textView = findViewById(R.id.text1);
final Handler handler = new Handler(Looper.getMainLooper());
MyRunnableTask task = new MyRunnableTask(handler, textView);
new Thread(task).start();
<pre>
MyRunnableTask.java
<pre>
import android.os.Handler;
import android.widget.TextView;
public class MyRunnableTask implements Runnable {
Handler mHandler;
TextView mTextView;
public MyRunnableTask(Handler handler, TextView textView) {
mHandler = handler;
mTextView = textView;
}
public void run() {
final String msg = "background exec";
if (mHandler != null) {
mHandler.post(new Runnable() {
@Override
public void run() {
if (mTextView != null) {
mTextView.setText(msg);
}
}
});
}
}
}
