android:设置密码隐藏与显示

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main.xml:

<?xml version="1.0"encoding="utf-8"?>
<LinearLayoutxmlns:android="http://schemas.android.com/apk/res/android"
   android:orientation="vertical"
   android:layout_width="fill_parent"
   android:layout_height="fill_parent"
   >
<TextView
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:text="@string/hello"
   />
<EditText
   android:layout_width="fill_parent"
   android:layout_height="wrap_content"
   android:inputType="textPassword"
   android:id="@+id/mima"
/>
<CheckBoxandroid:text="显示密码"  android:layout_width="wrap_content"
   android:layout_height="wrap_content"android:id="@+id/xianshifou"/>
</LinearLayout>

java代码：

public class M extends Activity {

    privateEditText et;
   privateCheckBox cb;
    public voidonCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);

       et=(EditText)findViewById(R.id.mima);
       cb=(CheckBox)findViewById(R.id.xianshifou);
       cb.setOnCheckedChangeListener(new OnCheckedChangeListener(){

            @Override
         public void onCheckedChanged(CompoundButton arg0,boolean arg1) {
            // TODO Auto-generated method stub
            if(cb.isChecked()){
               //设置EditText的密码为可见的
               et.setTransformationMethod(HideReturnsTransformationMethod.getInstance());
            }else{
               //设置密码为隐藏的
               et.setTransformationMethod(PasswordTransformationMethod.getInstance());
            }
         }

       });
    }
}