Android中明文和密文的切换

public class ClickProjectActivity extends Activity {private EditText input = null;private CheckBox check = null;    @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);        input = (EditText)this.findViewById(R.id.input);        check = (CheckBox)this.findViewById(R.id.check);        //CheckBox加上事件监听        check.setOnCheckedChangeListener(new OnCheckedChangeListener(){@Overridepublic void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {if(isChecked){//设置成明文//This transformation method causes any carriage return characters (\r) //to be hidden by displaying them as zero-width non-breaking space characters ().input.setTransformationMethod(HideReturnsTransformationMethod.getInstance());}else{//设置成密文//input.setTransformationMethod(PasswordTransformationMethod.getInstance());}}        });    }}