写入文件。 Java的。 Android

Question

final String rootPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Slots/"; 
    final File file = new File(rootPath); 
    file.mkdirs(); 
    final File sdFile = new File(file, "Profile.txt"); 
try { 
    BufferedWriter bw = new BufferedWriter(new FileWriter(sdFile)); 
    bw.write(edit.getText().toString() + "\n"); 
    bw.write("5000"); 
    } catch (IOException e) { 
} 

在此代码中捕获IOException，但文件已创建。请帮助！感谢所有的答案。

Answer 1

试试这个：

final String rootPath = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Slots/"; 
final File file = new File(rootPath); 
file.mkdirs(); 
final File sdFile = new File(file, "Profile.txt"); 
try { 
     FileWriter fw = new FileWriter(sdFile); 
     BufferedWriter bw = new BufferedWriter(fw); 
     bw.write("hello "+"\n"); 
     bw.write("5000"); 
     bw.close(); 
    } catch (IOException e) { 
     Log.e("exception ",e.getMessage()); 
    } 

确保您在您的清单文件中添加此权限：

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />