如何避免setViewValue中的TextView/TextSwitcher更新?

问题描述

我用setViewValue的代码更新了TextSwitcher的文本.但是，如果数据库值未更改，我想避免对其进行更新.这是我当前的代码:

I update the text of my TextSwitcher in the code of setViewValue. But in case database value is not changed, I would like to avoid its update.Here is my current code:

public boolean setViewValue(View view, Cursor cursor, int columnIndex) {
    int viewId = view.getId();
    switch(viewId) {
    case R.id.timetext:
         TextSwitcher twTime = (TextSwitcher) view;
         // something is wrong in the next line
         if (!cursor.getString(columnIndex).equals(getText(viewId)))
         {
            twTime.setText(cursor.getString(columnIndex));
         }
         return true;

以某种方式，数据仍然被更新.为什么?

Somehow, the data is still updated. Why?

类似getText()不能与TextSwitcher一起正常工作.如何获得其价值?

Looks like getText() doesn't work properly with TextSwitcher. How to get its value?

推荐答案

好，我找到了答案.首先要获取TextSwitcher的文本，应使用以下代码:

Ok, I found the answer.First of all to get the text of TextSwitcher the following code should be used:

TextView tv = (TextView) twTime.getCurrentView();
if (!cursor.getString(columnIndex).equals(tv.getText().toString())) {
    twTime.setText(cursor.getString(columnIndex));
}

但在此之前

twTime.setCurrentText(cursor.getString(columnIndex));

应该使用.

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