小编Lub*_*rak的帖子

我有一个文件,我有多行.Sublime Text 3中有一个选项可以反转整行吗？喜欢

ABCDEFG

至

GFEDCBA

我有这个布局与协调器布局,其中包含viewpager选项卡,在viewpager适配器中我为每个页面创建了recyclerview.

布局:

08-09 11:28:17.816    2804-2804/com.xxx.yyy.debug     E/AndroidRuntime? FATAL EXCEPTION: main
java.lang.IllegalArgumentException: width and height must be > 0
        at android.graphics.Bitmap.createBitmap(Bitmap.java:638)
        at android.graphics.Bitmap.createBitmap(Bitmap.java:620)
        at android.support.design.widget.CollapsingTextHelper.ensureExpandedTexture(CollapsingTextHelper.java:413)
        at android.support.design.widget.CollapsingTextHelper.setInterpolatedTextSize(CollapsingTextHelper.java:390)
        at android.support.design.widget.CollapsingTextHelper.calculateOffsets(CollapsingTextHelper.java:227)
        at android.support.design.widget.CollapsingTextHelper.setExpansionFraction(CollapsingTextHelper.java:203)
        at android.support.design.widget.CollapsingToolbarLayout$OffsetUpdateListener.onOffsetChanged(CollapsingToolbarLayout.java:768)
        at android.support.design.widget.AppBarLayout$Behavior.dispatchOffsetUpdates(AppBarLayout.java:853)
        at android.support.design.widget.AppBarLayout$Behavior.setAppBarTopBottomOffset(AppBarLayout.java:836)
        at android.support.design.widget.AppBarLayout$Behavior.scroll(AppBarLayout.java:795)
        at android.support.design.widget.AppBarLayout$Behavior.onNestedPreScroll(AppBarLayout.java:635)
        at android.support.design.widget.AppBarLayout$Behavior.onNestedPreScroll(AppBarLayout.java:583)
        at android.support.design.widget.CoordinatorLayout.onNestedPreScroll(CoordinatorLayout.java:1477)
        at android.support.v4.view.ViewParentCompat$ViewParentCompatStubImpl.onNestedPreScroll(ViewParentCompat.java:106)
        at android.support.v4.view.ViewParentCompat.onNestedPreScroll(ViewParentCompat.java:355)
        at android.support.v4.view.NestedScrollingChildHelper.dispatchNestedPreScroll(NestedScrollingChildHelper.java:208)
        at android.support.v7.widget.RecyclerView.dispatchNestedPreScroll(RecyclerView.java:8376)
        at android.support.v7.widget.RecyclerView.onTouchEvent(RecyclerView.java:2191)
        at android.view.View.dispatchTouchEvent(View.java:7205)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2231)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1964)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2237)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1979)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2237)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1979)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2237)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1979)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2237)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1979)
        at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2237)
        at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1979)
        at …

我是 python 新手，但我对 Java 有一些了解。在这里，我有我的第一个 python 代码：

class Movie(object):
    def __init__(self, name, year):
        self.name = name
        self.year = year

    def tostring(self):
        return "%s (%s)" % (self.name,self.year)

    def __str__(self):
        return self.tostring()


class MoviesCollection(object):
    def __init__(self):
        self.colection = []

    def add_movie(self, movie):
        self.colection.append(movie)

    def __iter__(self):
        return iter(self.colection)

    def __str__(self):
        return '\n'.join(map(str, self.colection))


filmy = MoviesCollection()
a = Movie('A', 256)
b = Movie('B', 512)
c = Movie('C', 1024)

filmy.add_movie(a)
filmy.add_movie(b)
filmy.add_movie(c)
filmy.add_movie(c)
filmy.add_movie(c)
filmy.add_movie(c)
#filmy.add_movie('Aloha')

for m in filmy:
    print m.tostring()

print filmy …

我有一个对象元素xxx.现在我想迭代它,我想检查是否有任何元素是img标记.我怎样才能做到这一点 ？