Question

我有一个带有EditText和Seekbar的Alretdialog。通过使用Seekbar，我想更改编辑文本的背景颜色更改搜索条颜色有效，但不会更改编辑文本背景颜色。

    EditText newSubjectEdit;
    SeekBar colorSeeker;
    Builder subjectAlert;
    LinearLayout lg;
private Builder getNewSubjectAlert() {
            subjectAlert = new AlertDialog.Builder(this);

            lg = new LinearLayout(getApplicationContext());
            ...

            newSubjectEdit = new EditText(getApplicationContext());
            ...
            lg.addView(newSubjectEdit);

            colorSeeker = new SeekBar(getApplicationContext());
colorSeeker.setOnSeekBarChangeListener(seekBarChangeListener);
            ...
            lg.addView(colorSeeker);

            subjectAlert.setView(lg);        
            // set ok and cancel ...

听众：

        SeekBar.OnSeekBarChangeListener seekBarChangeListener = new OnSeekBarChangeListener() {

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {
                // TODO Auto-generated method stub

            }

            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                seekBar.setBackgroundColor(color);  // works !!
                newSubjectEdit.setBackgroundColor(color);  // doesn't work
            }
        };

希望你理解我的意思......

Answer 1

ifound prob.as你添加了一次多次调用的dynamicical.newSubjectEdit.so它被覆盖了。对于seekbar seekbar.OnSeekBarChangeListener给你seekbar as arg。引用它。所以它给出了正确的对象

Android：Alert Builder在运行时更改颜色

1 个答案: