Question

是否可以将按钮放在最上方的左上角而不是正上方？

目前我有：

private File rawToWave(final File rawFile, final String filePath) throws IOException {

    File waveFile = new File(filePath);

    byte[] rawData = new byte[(int) rawFile.length()];
    DataInputStream input = null;
    try {
        input = new DataInputStream(new FileInputStream(rawFile));
        input.read(rawData);
    } finally {
        if (input != null) {
            input.close();
        }
    }

    DataOutputStream output = null;
    try {
        output = new DataOutputStream(new FileOutputStream(waveFile));
        // WAVE header
        // see http://ccrma.stanford.edu/courses/422/projects/WaveFormat/
        writeString(output, "RIFF"); // chunk id
        writeInt(output, 36 + rawData.length); // chunk size
        writeString(output, "WAVE"); // format
        writeString(output, "fmt "); // subchunk 1 id
        writeInt(output, 16); // subchunk 1 size
        writeShort(output, (short) 1); // audio format (1 = PCM)
        writeShort(output, (short) 1); // number of channels
        writeInt(output, Constants.RECORDER_SAMPLERATE); // sample rate
        writeInt(output, Constants.RECORDER_SAMPLERATE * 2); // byte rate
        writeShort(output, (short) 2); // block align
        writeShort(output, (short) 16); // bits per sample
        writeString(output, "data"); // subchunk 2 id
        writeInt(output, rawData.length); // subchunk 2 size
        // Audio data (conversion big endian -> little endian)
        short[] shorts = new short[rawData.length / 2];
        ByteBuffer.wrap(rawData).order(ByteOrder.LITTLE_ENDIAN).asShortBuffer().get(shorts);
        ByteBuffer bytes = ByteBuffer.allocate(shorts.length * 2);
        for (short s : shorts) {
            bytes.putShort(s);
        }
        output.write(bytes.array());
    } finally {
        if (output != null) {
            output.close();
        }
    }

    return waveFile;

}

private void writeInt(final DataOutputStream output, final int value) throws IOException {
    output.write(value >> 0);
    output.write(value >> 8);
    output.write(value >> 16);
    output.write(value >> 24);
}

private void writeShort(final DataOutputStream output, final short value) throws IOException {
    output.write(value >> 0);
    output.write(value >> 8);
}

private void writeString(final DataOutputStream output, final String value) throws IOException {
    for (int i = 0; i < value.length(); i++) {
        output.write(value.charAt(i));
    }
}

按钮在jumbotron上方创建一个显着的栏（看起来像垃圾导航栏！）

如何将按钮放在最左上角以消除此问题？

Answer 1

你走了。只需在按钮上添加绝对定位，然后将其放在您的jumbotron内，而不是在它上面。

File "d:\virEnv\lib\site-packages\django\core\handlers\base.py" in get_response
  149.                     response = self.process_exception_by_middleware(e, request)

File "d:\virEnv\lib\site-packages\django\core\handlers\base.py" in get_response
  147.                     response = wrapped_callback(request, *callback_args, **callback_kwargs)

File "D:\virEnv\myshop\shop\views.py" in product_list
  16.                         'products': products})

File "d:\virEnv\lib\site-packages\django\shortcuts.py" in render
  67.             template_name, context, request=request, using=using)

File "d:\virEnv\lib\site-packages\django\template\loader.py" in render_to_string
  97.         return template.render(context, request)

File "d:\virEnv\lib\site-packages\django\template\backends\django.py" in render
  95.             return self.template.render(context)

File "d:\virEnv\lib\site-packages\django\template\base.py" in render
  204.                 with context.bind_template(self):

File "c:\python35-32\Lib\contextlib.py" in __enter__
  59.             return next(self.gen)

File "d:\virEnv\lib\site-packages\django\template\context.py" in bind_template
  256.         processors = (template.engine.template_context_processors +

File "d:\virEnv\lib\site-packages\django\utils\functional.py" in __get__
  33.         res = instance.__dict__[self.name] = self.func(instance)

File "d:\virEnv\lib\site-packages\django\template\engine.py" in template_context_processors
  105.         return tuple(import_string(path) for path in context_processors)

File "d:\virEnv\lib\site-packages\django\template\engine.py" in <genexpr>
  105.         return tuple(import_string(path) for path in context_processors)

File "d:\virEnv\lib\site-packages\django\utils\module_loading.py" in import_string
  20.     module = import_module(module_path)

File "d:\virEnv\lib\importlib\__init__.py" in import_module
  126.     return _bootstrap._gcd_import(name[level:], package, level)

Exception Type: ImportError at /
Exception Value: No module named 'myshop.cart'

更新小提琴：http://www.bootply.com/vmmhsyhYlU

Bootstrap如何在超大屏幕的左上角添加按钮？

1 个答案: