Java 获取 EditText 的字符数
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Getting character count of EditText
提问by strange quark
I'm trying to get a character count of an EditText. I've looked into different properties of the EditText and TextView classes, but there doesn't seem to be a function that returns the amount of characters. I have tried to use the TextWatcher, but that is not ideal since sometimes I load a saved message into the EditText from the preferences, and TextWatcher does not count characters not typed right then.
我正在尝试获取 EditText 的字符数。我研究了 EditText 和 TextView 类的不同属性，但似乎没有返回字符数量的函数。我曾尝试使用 TextWatcher，但这并不理想，因为有时我将保存的消息从首选项加载到 EditText 中，并且 TextWatcher 不会计算当时未输入的字符。
Any help would be great!
任何帮助都会很棒！
Cheers!
干杯!
采纳答案by Mark B
Just grab the text in the EditText as a string and check its length:
只需将 EditText 中的文本作为字符串抓取并检查其长度：
int length = editText.getText().length();
回答by hunse
EditText edittext;
private final TextWatcher mTextEditorWatcher = new TextWatcher() {
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
public void onTextChanged(CharSequence s, int start, int before, int count) {
//This sets a textview to the current length
textview.setText(String.valueOf(s.length());
}
public void afterTextChanged(Editable s) {
}
};
editText.addTextChangedListener(mTextEditorWatcher);
