小编BGM*_*BGM的帖子

我正在尝试从另一个生成的文本文件中导入文本Activity.生成的文本文件由String ArrayList仅包含数字和由Android生成的其他随机文本组成.当我从文件中导入文本时,我正在使用a BufferedReader并将readLine()每个新数字转换为Integer ArrayList.我正从文本文件中删除任何非数字值,而在另一个Activity中生成的数字将被"\n"拆分.

我面临的问题是Android在加载时会崩溃Activity.我把原因缩小到了Integer.parseInt().

我的代码如下:

ArrayList<Integer> lines = new ArrayList<Integer>();

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        File file = new File(getFilesDir(), "test_file.txt");

        try {
            BufferedReader br = new BufferedReader(new FileReader(file));
            while (br.readLine() != null) {
                String text = (br.readLine()).replaceAll("[^0-9]+","").trim();
                Integer number = Integer.parseInt(text);
                lines.add(number);
            }
        } catch (IOException e) {

        }

        TextView tv = (TextView) findViewById(R.id.helptext);

        int max = 0, min = 100;
        double total …

我有动态改变文本的问题TextView在PopupWindowAndroid中.我已使用a 引用了TextView内部元素,但文本未更新.任何帮助将非常感谢!:)PopupWindowLayoutInflaterViewGroup

我的代码如下:

private void popupWindow() {
        try {
            LayoutInflater inflater = (LayoutInflater) SwingSpeed.this
                    .getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            View layout = inflater.inflate(R.layout.popup_recording,
                    (ViewGroup) findViewById(R.id.popup_element));
            pw = new PopupWindow(inflater.inflate(R.layout.popup_recording,
                    null, false), 480, 800, true);
            pw.showAtLocation(findViewById(R.id.swingspeed), Gravity.CENTER, 0,
                    0);
            recording_text = (TextView) layout
                    .findViewById(R.id.recording_text);
            recording_text.setText("Recording"); //Update the TextView  
        } catch (Exception e) {
            e.printStackTrace();
        }
    }