如果 EditText 中的单词少于 3 个单词,我想通过 Button 禁用,如果 EditText 中的单词超过 3 个单词,那么我想启用它以便它可以被点击.
I want to disable by Button if the words in the EditText is less than 3 words, and if the words in the EditText are more than 3 words then I want to enable it so that it can get Clicked.
有人可以帮我吗?
你必须 addTextChangedListener
到你的 EditText
像这样:
yourEditText.addTextChangedListener(new TextWatcher() {
@Override
public void afterTextChanged(Editable arg0) {
enableSubmitIfReady();
}
@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
}
@Override
public void onTextChanged(CharSequence s, int start, int before, int count) {
}
});
在那个方法中,你应该这样做:
In that method, you should do like this:
public void enableSubmitIfReady() {
boolean isReady = yourEditText.getText().toString().length() > 3;
yourbutton.setEnabled(isReady);
}
希望对你有帮助.
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