首页 \ 问答 \ java.lang.NoSuchMethodError:setBackground()(java.lang.NoSuchMethodError: setBackground())

java.lang.NoSuchMethodError:setBackground()(java.lang.NoSuchMethodError: setBackground())

在我的应用程序中,我正在尝试将位图图像设置为FrameLayout ,其中图像来自SQLite数据库。 我正在解码该图像将其转换为Drawable ,然后将其设置为FrameLayout背景,但它给出了我的错误,如java.lang.NoSuchMethodError: android.widget.FrameLayout.setBackground()

    ByteArrayInputStream imageStream2= new ByteArrayInputStream(cardbackground);
Bitmap Imagebackground = BitmapFactory.decodeStream(imageStream2);
Drawable imagebakground=new BitmapDrawable(getResources(),Imagebackground);
framelayout.setBackground(imagebakground);

我在用着,,

    android:minSdkVersion="14"
    android:targetSdkVersion="19"

In my app I'm trying to set a Bitmap Image to FrameLayout, where the image came from SQLite database. I'm decoding that image converting it into Drawable and then setting it as background to FrameLayout but it gives me Error like java.lang.NoSuchMethodError: android.widget.FrameLayout.setBackground()

    ByteArrayInputStream imageStream2= new ByteArrayInputStream(cardbackground);
Bitmap Imagebackground = BitmapFactory.decodeStream(imageStream2);
Drawable imagebakground=new BitmapDrawable(getResources(),Imagebackground);
framelayout.setBackground(imagebakground);

I'm using,,

    android:minSdkVersion="14"
    android:targetSdkVersion="19"

原文:https://stackoverflow.com/questions/22350868
更新时间:2024-03-06 18:03

最满意答案

您可以使用正则表达式( RegExp )检查它,特别是使用.test()函数:

if(/[^a-zA-Z]/.test(x))
    // code to throw error

如果x包含任何非字母字符,这将运行代码以引发错误。


You can check it using regular expressions (RegExp), specifically with the .test() function:

if(/[^a-zA-Z]/.test(x))
    // code to throw error

This will run the code to throw an error if any non-alphabetic character is contained in x.

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