BufferTextInputLayout.java 文件源码

void passwordVisibilityToggleRequested() {
    if (passwordToggleEnabled) {
        // Store the current cursor position
        final int selection = editText.getSelectionEnd();
        if (hasPasswordTransformation()) {
            editText.setTransformationMethod(null);
            passwordToggledVisible = true;
        } else {
            editText.setTransformationMethod(PasswordTransformationMethod.getInstance());
            passwordToggledVisible = false;
        }
        passwordToggleView.setChecked(passwordToggledVisible);
        // And restore the cursor position
        editText.setSelection(selection);
    }
}