小编Pum*_*kin的帖子

我以编程方式创建TextView,如下所示:

                TextView mTextView = new TextView(getApplicationContext());

                final LayoutParams params = new TableLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
                ((MarginLayoutParams) params).setMargins(8, 8, 0, 0);

                mTextView.setText(mText);
                mTextView.setLayoutParams(params);
                mTextView.setPadding(2, 2, 2, 2);
                mTextView.setBackground(getResources().getDrawable(R.drawable.note_corps));

                tagMap.addView(mTextView);

                textViewsWidth = mTextView.getWidth();

但是mTextView.getWidth()始终返回0

如果我尝试:

mTextView.getLayoutParams().width

它返回LayoutParams类中的LayoutParams对应值(-1或-2)

如何获得视图的宽度？

编辑我需要在这里这样做:

            @Override
        public void onPostExecute(Hashtable<String, Integer> hash){
            final ScrollView tagMapScroll = (ScrollView) findViewById(R.id.tagMapScroll);
            final LinearLayout tagMap = (LinearLayout) findViewById(R.id.tagMap);
            final ArrayList<Integer> arr = new ArrayList<Integer>(hash.values());
            final Enumeration<String> e = hash.keys();
            int index = 0;
            int textViewsWidth = 0;

            while(e.hasMoreElements()){
                final TextView tV = new TextView(getApplicationContext()); …

我尝试录制音频,只录制音频,我在Android 4.1.2上得到此错误,但在4.3上没有:

这是代码:

private void startRecord(){
    on_record = true;
    final boolean exists = (new File(Environment.getExternalStorageDirectory() + File.separator + NOTAY)).exists();
        if (!exists) {new File(Environment.getExternalStorageDirectory() + File.separator + "Test").mkdirs();}

        final boolean existAud = (new File(android.os.Environment.getExternalStorageDirectory() + File.separator + NOTAY + File.separator + "Audio")).exists();
        if (!existAud) {new File(Environment.getExternalStorageDirectory() + File.separator + "Test" + File.separator + "Audio").mkdirs();}

        final EditText editTitle= (EditText) findViewById(R.id.editTitle);
        final String title = editTitle.getText().toString();
        final String audioName = getDate(System.currentTimeMillis()).replaceAll(" ", "_");
        currentAudioPath =    Environment.getExternalStorageDirectory().getAbsolutePath()
                            + File.separator
                            + "Test"
                            + File.separator
                            + …