EditText中的数据隐藏与显示

mSwitch.setOnCheckedChangeListener(
                new CompoundButton.OnCheckedChangeListener() {
                    @Override
                    public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                        if (isChecked) {
                            //设置为明文显示
                            mEditText
                                    .setTransformationMethod(HideReturnsTransformationMethod.getInstance());
                        } else {
                            //设置为秘文显示
                            mEditText
                                    .setTransformationMethod(PasswordTransformationMethod.getInstance());
                        }
                        //光标跟着字动，一直居后面
                        mEditText.setSelection(mEditText.getText().toString().length());
                    }
                });