setTransformationMethod 的使用

final CheckBox checkbox = (CheckBox) findViewById(R.id.cb);
/* add a listener to the CheckBox */
checkbox.setOnCheckedChangeListener(new CheckBox.OnCheckedChangeListener(){
public void onCheckedChanged(CompoundButton buttonView,boolean isChecked){
if(checkbox.isChecked()){
/* show the password*/
textCarNumberNear.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
}
else{
/* hide the password */
textCarNumberNear.setTransformationMethod(PasswordTransformationMethod.getInstance());
}
}
});

if(isChecked){
//显示密码框内容
mEditPwd.setInputType(InputType.TYPE_CLASS_TEXT | EditorInfo.TYPE_TEXT_VARIATION_NORMAL);
}else{
//隐藏密码框内容
mEditPwd.setInputType(InputType.TYPE_CLASS_TEXT | InputType.TYPE_TEXT_VARIATION_PASSWORD);
}
mEditPwd.setSelection(mEditPwd.getText().toString().length());//设置光标位置在文本框末尾

//----------------小写转化为大写--------------------------//
public class InputLowerToUpper extends ReplacementTransformationMethod{
@Override
protected char[] getOriginal() {
char[] lower = { 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z' };
return lower;
}

@Override
protected char[] getReplacement() {
char[] upper = { 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J','K','L','M','N','O','P','Q','R','S','T','U','V','W','X','Y','Z' };
return upper;
}

}

final EditText textCarNumber=(EditText) viewNew.findViewById(R.id.borrow_carnumber);
textCarNumber.setTransformationMethod(new InputLowerToUpper());