在文件中读取时的垃圾值。（疑似垃圾值似乎是单词TextView）

Question

这只是一个简单的程序来创建各种日记。从文件中读取文本垃圾值（疑似）存在于录制的文本之前。没有任何一个toasts显示任何垃圾。请帮忙

我在阅读本课时遇到错误

public class ReadDiary extends AppCompatActivity {
TextView textView;
    File file;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_read_diary);

        Intent intent=getIntent();
        String filename= intent.getStringExtra("example.mydiary");
        file=new File(this.getFilesDir(),filename);
        String data="";
        try {
            BufferedReader r = new BufferedReader(new FileReader(file));
            int ch;
        while ((ch = r.read()) != -1)
            {
        data += (char) ch;
            }r.close();
        }catch (Exception e)

        Toast.makeText(this,data,Toast.LENGTH_LONG);
            textView=(TextView)findViewById(R.id.textView);
    // textView.setMovementMethod(new ScrollingMovementMethod());
        textView.setText("                ");
        textView.setText(""+data);
    }
}

写入文件的类是

    public class DiaryEntry extends AppCompatActivity {
File file;
EditText editText;
String filename;
@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_diary_entry);
    Intent intent= getIntent();
    filename=intent.getStringExtra("example.mydiary");
    file=new File(filename);
    if(!file.exists())
        try {
            file.createNewFile();
            Toast.makeText(this,"Saved....",Toast.LENGTH_LONG).show();
        } catch (IOException e) {
         //   e.printStackTrace();
        }
    editText=(EditText)findViewById(R.id.Diaryentry);
    editText.setText("");
        Toast.makeText(DiaryEntry.this,"Saved",Toast.LENGTH_LONG).show();
}
protected void saveData(View view)
{try {
    Toast.makeText(DiaryEntry.this,"Really?",Toast.LENGTH_LONG).show();
    String s="";
    s+=editText.getText().toString();
    s+="";
    Writer writer = new OutputStreamWriter(new ObjectOutputStream(openFileOutput(filename, Context.MODE_PRIVATE)));
    writer.flush();
    writer.write(s);
    writer.flush();
    writer.close();
    Toast.makeText(DiaryEntry.this,editText.getText().toString(),Toast.LENGTH_LONG).show();
    Intent intent= new Intent(this,DiaryHomePage.class);
    Toast.makeText(DiaryEntry.this,s,Toast.LENGTH_LONG).show();
    startActivity(intent);
}
catch (Exception e)
{
}
}
}