Android常用UI組件 - TextView

標籤：android   textview   

TextView是Android裡面用的最多的UI組件，一般使用在需要顯示一些資訊的時候，其不能輸入，只能初始設定或者在程式中修改。
執行個體：TextViewDemo 運行效果：
代碼清單：布局檔案：main.xml

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns: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="這裡是TextView，你可以在這裡顯示一些文本資訊。"    /></LinearLayout>

Java原始碼檔案：MainActivity.java

package com.rainsong.textviewdemo;import android.app.Activity;import android.os.Bundle;public class MainActivity extends Activity{    /** Called when the activity is first created. */    @Override    public void onCreate(Bundle savedInstanceState)    {        super.onCreate(savedInstanceState);        setContentView(R.layout.main);    }}

API知識點 Activitypublic classActivityextends ContextThemeWrapperimplements ComponentCallbacks2 KeyEvent.Callback LayoutInflater.Factory2 View.OnCreateContextMenuListener Window.Callback
Known Direct SubclassesAccountAuthenticatorActivity, ActivityGroup, AliasActivity, ExpandableListActivity, FragmentActivity, ListActivity, NativeActivity
Known Indirect SubclassesLauncherActivity, PreferenceActivity, TabActivity
void setContentView(int layoutResID)Set the activity content from a layout resource.
TextViewpublic classTextViewextends Viewimplements ViewTreeObserver.OnPreDrawListener
Known Direct SubclassesButton, CheckedTextView, Chronometer, DigitalClock, EditText, TextClock
Known Indirect SubclassesAutoCompleteTextView, CheckBox, CompoundButton, ExtractEditText, MultiAutoCompleteTextView, RadioButton, Switch, ToggleButton
Class OverviewDisplays text to the user and optionally allows them to edit it. A TextView is a complete text editor, however the basic class is configured to not allow editing; see EditText for a subclass that configures the text view for editing.
Public ConstructorsTextView(Context context)TextView(Context context, AttributeSet attrs)TextView(Context context, AttributeSet attrs, int defStyle)

Android常用UI組件 - TextView