processing - 我怎么能选择一个特定的文件来加载 loadStrings

Question

标题够明确，我想让用户选择他想要打开的文本文件。
我不知道是否已经在处理中实现了资源管理器或输入字段。

任何帮助都会很棒。

Answer 1

使用 selectInput .从处理引用:

Opens a platform-specific file chooser dialog to select a file for input. After the selection is made, the selected File will be passed to the 'callback' function. If the dialog is closed or canceled, null will be sent to the function, so that the program is not waiting for additional input. The callback is necessary because of how threading works.

我修改了他们在引用中提供的示例草图，以包括使用 loadStrings 加载文件方法。

String[] txtFile;

void setup() {
  selectInput("Select a file to process:", "fileSelected");
}

void fileSelected(File selection) {
  if (selection == null) {
    println("Window was closed or the user hit cancel.");
  } else {
    String filepath = selection.getAbsolutePath();
    println("User selected " + filepath);
    // load file here
    txtFile = loadStrings(filepath);
  }
}