[Android] 3, EditText use small program

Here is a simple, look at the following code to know: The button click event with the string str = Et.gettext (). toString (); Gets the text content.

1  Public classMainactivityextendsActivityImplementsonclicklistener{2       PrivateEditText et;//Create a text-edited object3       PrivateButton btn;4       PrivateTextView TV;5 @Override6      Public voidonCreate (Bundle savedinstancestate) {7         Super. OnCreate (savedinstancestate);8 Setcontentview (r.layout.main);9et= (EditText) Findviewbyid (r.id.et);//instantiating text editsTenbtn=(Button) Findviewbyid (R.ID.BTN); OneBtn.setonclicklistener ( This); ATV =(TextView) Findviewbyid (r.id.tv); -     } - @Override the      Public voidOnClick (View v) { -         if(v==btn) { -             //get the text content in EditText -String str =Et.gettext (). toString (); +             //let TextView get to the EditText content str show up - Tv.settext (str); +         }  A     } at}

Note: from the above effect can be seen in the input box is the password type, see the XML file know: 18 Line Password property is true.

1 <?XML version= "1.0" encoding= "Utf-8"?>2 <LinearLayoutxmlns:android= "Http://schemas.android.com/apk/res/android"3 android:orientation= "vertical"4 Android:layout_width= "Fill_parent"5 Android:layout_height= "Fill_parent"6     >7     <TextView8         Android:layout_width= "Fill_parent" 9 Android:layout_height= "Wrap_content" Ten Android:text= "@string/hello" One Android:id= "@+id/tv" A         /> -      <EditText -         Android:layout_width= "Fill_parent"  the Android:layout_height= "Wrap_content"  - Android:hint= "prompt Message" - Android:id= "@+id/et" - Android:password= "true" +      /> -      <Button +         Android:layout_width= "Fill_parent"  A Android:layout_height= "Wrap_content"  at Android:text= "Get edittext content!" - Android:id= "@+id/btn" -         /> - </LinearLayout>

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[Android] 3, EditText use small program