Question

我有一张包含大量EditTexts的表单。点击EditText（焦点）时，我希望scrollview滚动到该位置。我在onFocusChangeListener中实施了Fragment，但它似乎无法正常工作。另一个问题是onFocusChange永远不会被调用..任何想法？

这是我的代码：

@Override
public void onFocusChange(View v, boolean hasFocus) {
    if(hasFocus){
        int[] loc = new int[2]; 
        v.getLocationOnScreen(loc);
        sw.scrollTo(loc[0], loc[1]);
    }
}

Answer 1

<强> edittext.requestFocus（）;

EditText editText = new EditText（getActivity（））;

    editText.setOnClickListener(new OnClickListener() {

        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
            arg0.requestFocus();
        }
    });

Answer 2

假设我们在片段内部实现了onFocusChangeListener 试试这个：

editText.setOnFocusChangeListener(this);
.....

@Override
public void onFocusChange(View v, boolean hasFocus) {
if(v.getId()==editText.getId())
{
if(hasFocus){
    int[] loc = new int[2]; 
    v.getLocationOnScreen(loc);
    sw.scrollTo(loc[0], loc[1]);
}
}
}

Answer 3

你可以这样试试。比如

@Override
public void onCreate(Bundle savedInstanceState) {
    .....  
    EditText et = (EditText)findViewById(R.id.wo_task_comments);
    et.setOnTouchListener(this);
    .....
}

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if(view.getId() == R.id.wo_task_comments){
        view.getParent().requestDisallowInterceptTouchEvent(true);
        switch (motionEvent.getAction() & MotionEvent.ACTION_MASK) {
            case MotionEvent.ACTION_UP:
                view.getParent().requestDisallowInterceptTouchEvent(false);
                break;
        }
    }
    return false;
}

在你的情况下：

public class MyActivity extends Activity  {

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    initComments(findViewById(R.id.YOUR_MAIN_LAYOUT_ID));  
}


public void initComments(final View view) {
    EditText comment = (EditText) view.findViewById(R.id.wo_task_comments);

    comment.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(final View v, final MotionEvent motionEvent) {
            if (v.getId() == R.id.wo_task_comments) {
                v.getParent().requestDisallowInterceptTouchEvent(true);
                switch (motionEvent.getAction() & MotionEvent.ACTION_MASK) {
                    case MotionEvent.ACTION_UP:
                        v.getParent().requestDisallowInterceptTouchEvent(
                                false);
                        break;
                }
            }
            return false;
        }
    });

    comment.setText("very very long comment"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment\n" + "very very long comment\n"
            + "very very long comment");
}
}

[参考] [在scrollview中滚动编辑框] 1

滚动到EdiTtext

3 个答案: