Overview of the Android entry controls

Text:

TextView: Marquee Four lines of code, custom controls

EditText Special properties: Hint InputType

Autocompletetextview Special properties: Hint,completionthreshold requires an adapter layout file to choose Android. R.layout.simple_list_item1

Multiautocompletetextview Special properties: Completionthreshold requires an adapter

　　

Image:

ImageView Special properties: Backgroud,src Backgroud can also set the background color

Button:

Button has the Text property Onclicklistener ()

ImageButton has the SRC attribute and the background attribute, without the Text property Onclicklistener ();

ToggleButton Special properties: Checked,texton,textoff requires a oncheckchangelistener ()

check box

CheckBox Special attribute: checked requires a oncheckchangelistener ()

Radiogroup,radiobutton Special Properties: orientation;checked multiple selection of one oncheckchangelistener ()

Event:

Onclicklistener (Listenner) Oncheckchangelistener (Listener)

Three ways to implement events:

1, Anonymous inner class

2, the way to implement the interface

3, external class (used when all buttons are required to implement the same function)

Adapter adapter:

Create adapter First

arrayadapter<string> adapter= New Arrayadapter<string> (this,//context, layout file, data source

Android. R.layout.simple_list_item_1, RES);

Autoc.setadapter (adapter); To bind a control to an adapter

Toast.maketext (mainactivity.this, "Anonymous inner Class", 1). Show ();

Here are the questions and workarounds:

1, the new Android project does not have a R.java file

Just tick in front of the build automatically option in Project dropdown.

2. Change the layout

Refator--android--changelayout

3, create a new activity and add it in Androidmanifest

4, Anonymous internal class context fill in: Activity name. This

Overview of the Android entry controls