防止应用程序从 java.io.IOException 崩溃：写入失败：ENOSPC（设备上没有剩余空间）

Question

In an attempt to write to the device, when the device is full, I am getting error: com.google.gson.JsonIOException: java.io.IOException: write failed: ENOSPC (No space left on device) . I have a try-catch block to catch an IOException and a few lines to check the size of the list and storage space available to determine if there is space to write the file but yet it still crashed the app and I got the IOException mentioned above.

Here is the code:

File file = new File(getExternalFilesDir(null), fileName+".txt");
int file_size = Integer.parseInt(String.valueOf(file.length()/1024));
long storage_size = (getAvailableInternalMemorySize()/1024);
long list_size = listToWrite.toString().getBytes().length/1024;
long total_size = file_size + list_size;
if(total_size < storage_size) {
    try (Writer writer = new FileWriter(file, false)) {
        Gson gson = new GsonBuilder().create();
        gson.toJson(listToWrite, writer);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

Is there a way to stop the app from crashing and just display a Toast message to the user or perform some action.

Answer 1

在您的清单文件中添加此属性：

android:installLocation="preferExternal"