Edittext password屬性爲true導致hint全角問題

hint字體受EditText的text字體影響，即受android:typeface的影響。android:typeface有三個取值：“sans”，“serif”，“monospace”,看源碼：

setInputType中：

  if (isPassword) {
            setTransformationMethod(PasswordTransformationMethod.getInstance());
            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
        } else if (isVisiblePassword) {
            if (mTransformation == PasswordTransformationMethod.getInstance()) {
                forceUpdate = true;
            }
            setTypefaceFromAttrs(null /* fontFamily */, MONOSPACE, 0);
        } else if (wasPassword || wasVisiblePassword) {
            // not in password mode, clean up typeface and transformation
            setTypefaceFromAttrs(null /* fontFamily */, -1, -1);
            if (mTransformation == PasswordTransformationMethod.getInstance()) {
                forceUpdate = true;
            }
        }

構造函數中：

  if (password || passwordInputType || webPasswordInputType || numberPasswordInputType) {
            setTransformationMethod(PasswordTransformationMethod.getInstance());
            typefaceIndex = MONOSPACE;
        } else if (mEditor != null &&
                (mEditor.mInputType & (EditorInfo.TYPE_MASK_CLASS | EditorInfo.TYPE_MASK_VARIATION))
                == (EditorInfo.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_PASSWORD)) {
            typefaceIndex = MONOSPACE;
        }

可以看到當爲密碼欄時字體是

MONOSPACE

默認Sans，所以會導致字體不一致，找到問題的根源那麼解決辦法就有了，設成默認的就好：

passEdit.setTypeface(Typeface.SANS_SERIF);