Question

我想为每个具有的EditText（在我的情况下为VerifiedEditText）设置自动滚动。我是这样做的，但我不认为这是应该做的方式（看起来太复杂，凌乱且时间太长），请您推荐我使它更简单吗？我仍在独自学习，因此对附加代码的解释将是非常感谢。谢谢

@Override
public void onFocusScroll() {

final ScrollView mScrollView;    
mScrollView = (ScrollView) rootView.findViewById(R.id.register_scroll);

        final VerifiedEditText editText0 = (VerifiedEditText) rootView.findViewById(R.id.register_ticket);
        final VerifiedEditText editText1 = (VerifiedEditText) rootView.findViewById(R.id.register_sektor);
        final VerifiedEditText editText2 = (VerifiedEditText) rootView.findViewById(R.id.register_row);
        final VerifiedEditText editText3 = (VerifiedEditText) rootView.findViewById(R.id.register_seat);

        editText0.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    mScrollView.post(new Runnable() {
                        public void run() {
                            mScrollView.smoothScrollTo(0, mScrollView.getTop());
                        }
                    });
                }
            }
        });

        editText1.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    mScrollView.post(new Runnable() {
                        @Override
                        public void run() {
                            mScrollView.smoothScrollTo(0, mScrollView.getBottom());
                        }
                    });
                }
            }
        });

        editText2.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    mScrollView.post(new Runnable() {
                        @Override
                        public void run() {
                            mScrollView.smoothScrollTo(0, mScrollView.getBottom());
                        }
                    });
                }
            }
        });

        editText3.setOnFocusChangeListener(new View.OnFocusChangeListener() {
            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {
                    mScrollView.post(new Runnable() {
                        @Override
                        public void run() {
                            mScrollView.smoothScrollTo(0, mScrollView.getBottom());
                        }
                    });
                }
            }
        });
    }

Answer 1

     implement class by `View.OnFocusChangeListener`

and set Focus Listener to the current instanace of class because treat as View.OnFocusChangeListener instnace and Override onFocusChange() medthod

v.getTop() return top position of current focused view

 editText0.setOnFocusChangeListener(this);
 editText1.setOnFocusChangeListener(this);
 editText2.setOnFocusChangeListener(this);
 editText3.setOnFocusChangeListener(this);




            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                if (hasFocus) {

                    mScrollView.post(new Runnable() {
                        public void run() {
                            mScrollView.smoothScrollTo(0, v.getTop());
                        }
                    });




}
                }
            }

设置OnFocusChangeListener以便在Fragment中获得更多editTexts

1 个答案: