a. 打印字符串数组
将字符串数组 names 中的所有字符串依次打印出来:
String[] names = ...;
Observable.from(names)
.subscribe(new Action1<String>() {
@Override
public void call(String name) {
Log.d(tag, name);
}
});
b. 由 id 取得图片并显示
由指定的一个 drawable 文件 id drawableRes 取得图片,并显示在 ImageView 中,并在出现异常的时候打印 Toast 报错:
int drawableRes = ...;
ImageView imageView = ...;
Observable.create(new OnSubscribe<Drawable>() {
@Override
public void call(Subscriber<? super Drawable> subscriber) {
Drawable drawable = getTheme().getDrawable(drawableRes));
subscriber.onNext(drawable);
subscriber.onCompleted();
}
}).subscribe(new Observer<Drawable>() {
@Override
public void onNext(Drawable drawable) {
imageView.setImageDrawable(drawable);
}
@Override
public void onCompleted() {
}
@Override
public void onError(Throwable e) {
Toast.makeText(activity, "Error!", Toast.LENGTH_SHORT).show();
}
});