Android ApiDemo ——Graphics和View （5）

70.Spinner1

注意：源碼第7行ArrayAdapter用R.array.colors數組來設置

 1:  @Override 2:  public void onCreate(Bundle savedInstanceState) { 3:      super.onCreate(savedInstanceState); 4:      setContentView(R.layout.spinner_1); 5:    6:      Spinner s1 = (Spinner) findViewById(R.id.spinner1); 7:      ArrayAdapter<CharSequence> adapter = ArrayAdapter.createFromResource( 8:              this, R.array.colors, android.R.layout.simple_spinner_item); 9:      adapter10:              .setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);11:      s1.setAdapter(adapter);12:   13:      Spinner s2 = (Spinner) findViewById(R.id.spinner2);14:      adapter = ArrayAdapter.createFromResource(this, R.array.planets,15:              android.R.layout.simple_spinner_item);16:      adapter17:              .setDropDownVIEwResource(android.R.layout.simple_spinner_dropdown_item);18:      s2.setAdapter(adapter);19:  }布局：

android:prompt="@string/spinner_1_color_prompt"為提示， 

1:  <Spinner android:id="@+id/spinner1"2:        android:layout_width="fill_parent"3:        android:layout_height="wrap_content"4:        android:drawSelectorOnTop="true"5:        android:prompt="@string/spinner_1_color_prompt"6:    />

71.Tabs1

源碼：第15行繼承TabActivity

 1:  import android.app.TabActivity; 2:  import android.os.Bundle; 3:  import android.widget.TabHost; 4:  import android.widget.TabHost.TabSpec; 5:  import android.view.LayoutInflater; 6:  import android.view.VIEw; 7:    8:  import com.example.android.apis.R; 9:   10:  /**11:   * An example of tabs that uses labels (12:   * {@link TabSpec#setIndicator(CharSequence)}) for its indicators and views by13:   * id from a layout file ({@link TabSpec#setContent(int)}).14:   */15:  public class Tabs1 extends TabActivity {16:   17:      @Override18:      protected void onCreate(Bundle savedInstanceState) {19:          super.onCreate(savedInstanceState);20:          TabHost tabHost = getTabHost();21:  22:          LayoutInflater.from(this).inflate(R.layout.tabs1,23:                  tabHost.getTabContentView(), true);24:  25:          tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("tab1")26:                  .setContent(R.id.view1));27:          tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("tab2")28:                  .setContent(R.id.view2));29:          tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("tab3")30:                  .setContent(R.id.vIEw3));31:      }32:  }布局：第22行的tabs1.XML

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <FrameLayout XMLns:android="http://schemas.android.com/apk/res/android" 4:      android:layout_width="fill_parent" 5:      android:layout_height="fill_parent"> 6:   7:      <TextView android:id="@+id/view1" 8:          android:background="@drawable/blue" 9:          android:layout_width="fill_parent"10:          android:layout_height="fill_parent"11:          android:text="@string/tabs_1_tab_1"/>12:  13:      <TextView android:id="@+id/view2"14:          android:background="@drawable/red"15:          android:layout_width="fill_parent"16:          android:layout_height="fill_parent"17:          android:text="@string/tabs_1_tab_2"/>18:  19:      <TextView android:id="@+id/vIEw3"20:          android:background="@drawable/green"21:          android:layout_width="fill_parent"22:          android:layout_height="fill_parent"23:          android:text="@string/tabs_1_tab_3"/>24:  25:  </FrameLayout>26: 

72.Tabs2

源碼：

 1:  import android.app.TabActivity; 2:  import android.os.Bundle; 3:  import android.widget.TabHost; 4:  import android.widget.TextView; 5:  import android.view.VIEw; 6:  import com.example.android.apis.R; 7:    8:  /** 9:   * Example of using a tab content factory for the content via10:   * {@link TabHost.TabSpec#setContent(android.widget.TabHost.TabContentFactory)}11:   * 12:   * It also demonstrates using an icon on one of the tabs via13:   * {@link TabHost.TabSpec#setIndicator(CharSequence, android.graphics.drawable.Drawable)}14:   * 15:   */16:  public class Tabs2 extends TabActivity implements TabHost.TabContentFactory {17:   18:      @Override19:      protected void onCreate(Bundle savedInstanceState) {20:          super.onCreate(savedInstanceState);21:   22:          final TabHost tabHost = getTabHost();23:          tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("tab1",24:                  getResources().getDrawable(R.drawable.star_big_on)).setContent(25:                  this));26:          tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("tab2")27:                  .setContent(this));28:          tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("tab3")29:                  .setContent(this));30:      }31:   32:      /** {@inheritDoc} */33:      public View createTabContent(String tag) {34:          final TextView tv = new TextVIEw(this);35:          tv.setText("Content for tab with tag " + tag);36:          return tv;37:      }38:  }

73.Tabs3： 三個Tab布局不一樣

源碼：

 1:  import android.app.TabActivity; 2:  import android.os.Bundle; 3:  import android.widget.TabHost; 4:  import android.content.Intent; 5:    6:  /** 7:   * An example of tab content that launches an activity via 8:   * {@link android.widget.TabHost.TabSpec#setContent(android.content.Intent)} 9:   */10:  public class Tabs3 extends TabActivity {11:   12:      @Override13:      protected void onCreate(Bundle savedInstanceState) {14:          super.onCreate(savedInstanceState);15:   16:          final TabHost tabHost = getTabHost();17:   18:          tabHost.addTab(tabHost.newTabSpec("tab1").setIndicator("list")19:                  .setContent(new Intent(this, List1.class)));20:   21:          tabHost.addTab(tabHost.newTabSpec("tab2").setIndicator("photo list")22:                  .setContent(new Intent(this, List8.class)));23:   24:          // This tab sets the intent flag so that it is recreated each time25:          // the tab is clicked.26:          tabHost.addTab(tabHost.newTabSpec("tab3").setIndicator("destroy")27:                  .setContent(28:                          new Intent(this, Controls2.class)29:                                  .addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP)));30:      }31:  }

TextSwitcher會加1

布局：

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android" 4:      android:layout_width="fill_parent" 5:      android:layout_height="fill_parent" 6:      android:orIEntation="vertical"> 7:   8:      <Button android:id="@+id/next" 9:          android:layout_width="wrap_content"10:          android:layout_height="wrap_content" 11:          android:text="@string/text_switcher_1_next_text" />12:  13:      <TextSwitcher android:id="@+id/switcher"14:          android:layout_width="fill_parent"15:          android:layout_height="wrap_content" />16:  17:  </LinearLayout>18:  源碼：

 1:  import com.example.android.apis.R; 2:    3:  import android.app.Activity; 4:  import android.os.Bundle; 5:  import android.view.Gravity; 6:  import android.view.View; 7:  import android.view.animation.Animation; 8:  import android.view.animation.AnimationUtils; 9:  import android.widget.Button;10:  import android.widget.TextSwitcher;11:  import android.widget.TextView;12:  import android.widget.ViewSwitcher;13:   14:  /**15:   * Uses a TextSwitcher.16:   */17:  public class TextSwitcher1 extends Activity implements18:          ViewSwitcher.ViewFactory, View.OnClickListener {19:   20:      private TextSwitcher mSwitcher;21:  22:      private int mCounter = 0;23:  24:      @Override25:      protected void onCreate(Bundle savedInstanceState) {26:          super.onCreate(savedInstanceState);27:  28:          setContentView(R.layout.text_switcher_1);29:  30:          mSwitcher = (TextSwitcher) findVIEwById(R.id.switcher);31:          mSwitcher.setFactory(this);32:  33:          Animation in = AnimationUtils.loadAnimation(this,34:                  android.R.anim.fade_in);35:          Animation out = AnimationUtils.loadAnimation(this,36:                  android.R.anim.fade_out);37:          mSwitcher.setInAnimation(in);38:          mSwitcher.setOutAnimation(out);39:  40:          Button nextButton = (Button) findViewById(R.id.next);41:          nextButton.setOnClickListener(this);42:  43:          updateCounter();44:      }45:  46:      public void onClick(View v) {47:          mCounter++;48:          updateCounter();49:      }50:  51:      private void updateCounter() {52:          mSwitcher.setText(String.valueOf(mCounter));53:      }54:  55:      public View makeView() {56:          TextView t = new TextVIEw(this);57:          t.setGravity(Gravity.TOP | Gravity.CENTER_HORIZONTAL);58:          t.setTextSize(36);59:          return t;60:      }61:  }75.Visibility1

布局：

 1:  <?XML version="1.0" encoding="utf-8"?> 2:   3:  <!-- Demonstrates changing vIEw visibility. See corresponding Java code. --> 4:   5:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android" 6:      android:orientation="vertical" 7:      android:layout_width="fill_parent" 8:      android:layout_height="fill_parent"> 9:  10:      <LinearLayout11:        android:orientation="vertical"12:        android:background="@drawable/box"13:        android:layout_width="fill_parent"14:        android:layout_height="wrap_content">15:  16:        <TextView17:            android:background="@drawable/red"18:            android:layout_width="fill_parent"19:            android:layout_height="wrap_content"20:            android:text="@string/visibility_1_view_1"/>21:  22:        <TextView android:id="@+id/victim"23:            android:background="@drawable/green"24:            android:layout_width="fill_parent"25:            android:layout_height="wrap_content"26:            android:text="@string/visibility_1_view_2"/>27:  28:        <TextView29:            android:background="@drawable/blue"30:            android:layout_width="fill_parent"31:            android:layout_height="wrap_content"32:            android:text="@string/visibility_1_view_3"/>33:  34:      </LinearLayout>35:  36:      <LinearLayout37:          android:orIEntation="horizontal"38:          android:layout_width="wrap_content"39:          android:layout_height="wrap_content">40:  41:          <Button android:id="@+id/vis"42:              android:layout_width="wrap_content"43:              android:layout_height="wrap_content"44:              android:text="@string/visibility_1_vis"/>45:  46:          <Button android:id="@+id/invis"47:              android:layout_width="wrap_content"48:              android:layout_height="wrap_content"49:              android:text="@string/visibility_1_invis"/>50:  51:          <Button android:id="@+id/gone"52:              android:layout_width="wrap_content"53:              android:layout_height="wrap_content"54:              android:text="@string/visibility_1_gone"/>55:  56:      </LinearLayout>57:  </LinearLayout>58:  源碼：

 1:  import android.app.Activity; 2:  import android.os.Bundle; 3:  import android.view.View; 4:  import android.view.VIEw.OnClickListener; 5:  import android.widget.Button; 6:    7:  /** 8:   * Demonstrates making a view VISIBLE, INVISIBLE and GONE 9:   * 10:   */11:  public class Visibility1 extends Activity {12:   13:      private View mVictim;14:   15:      @Override16:      protected void onCreate(Bundle savedInstanceState) {17:          super.onCreate(savedInstanceState);18:          setContentView(R.layout.visibility_1);19:   20:          // Find the view whose visibility will change21:          mVictim = findViewById(R.id.victim);22:   23:          // Find our buttons24:          Button visibleButton = (Button) findViewById(R.id.vis);25:          Button invisibleButton = (Button) findViewById(R.id.invis);26:          Button goneButton = (Button) findViewById(R.id.gone);27:   28:          // Wire each button to a click listener29:          visibleButton.setOnClickListener(mVisibleListener);30:          invisibleButton.setOnClickListener(mInvisibleListener);31:          goneButton.setOnClickListener(mGoneListener);32:      }33:   34:      OnClickListener mVisibleListener = new OnClickListener() {35:          public void onClick(View v) {36:              mVictim.setVisibility(View.VISIBLE);37:          }38:      };39:   40:      OnClickListener mInvisibleListener = new OnClickListener() {41:          public void onClick(View v) {42:              mVictim.setVisibility(View.INVISIBLE);43:          }44:      };45:   46:      OnClickListener mGoneListener = new OnClickListener() {47:          public void onClick(View v) {48:              mVictim.setVisibility(View.GONE);49:          }50:      };51:  }76.WebVIEw1

布局：10個WebVIEw

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <ScrollVIEw XMLns:android="http://schemas.android.com/apk/res/android" 4:      android:layout_width="fill_parent"  5:      android:layout_height="wrap_content" 6:      android:orientation="vertical"> 7:       8:       9:      <LinearLayout10:          android:orientation="vertical"11:          android:layout_width="fill_parent"12:          android:layout_height="wrap_content">13:          14:          <WebView android:id="@+id/wv1"15:              android:layout_height="wrap_content"16:              android:layout_width="fill_parent"17:              />18:              19:          <WebView android:id="@+id/wv2"20:              android:layout_height="wrap_content"21:              android:layout_width="fill_parent"22:              />23:              24:          <WebView android:id="@+id/wv3"25:              android:layout_height="wrap_content"26:              android:layout_width="fill_parent"27:              />28:              29:          <WebView android:id="@+id/wv4"30:              android:layout_height="wrap_content"31:              android:layout_width="fill_parent"32:              />33:              34:          <WebView android:id="@+id/wv5"35:              android:layout_height="wrap_content"36:              android:layout_width="fill_parent"37:              />38:              39:          <WebView android:id="@+id/wv6"40:              android:layout_height="wrap_content"41:              android:layout_width="fill_parent"42:              />43:      44:          <WebView android:id="@+id/wv7"45:              android:layout_height="wrap_content"46:              android:layout_width="fill_parent"47:              />48:              49:          <WebView android:id="@+id/wv8"50:              android:layout_height="wrap_content"51:              android:layout_width="fill_parent"52:              />53:              54:          <WebView android:id="@+id/wv9"55:              android:layout_height="wrap_content"56:              android:layout_width="fill_parent"57:              />58:              59:          <WebVIEw android:id="@+id/wv10"60:              android:layout_height="wrap_content"61:              android:layout_width="fill_parent"62:              />63:      </LinearLayout>64:          65:   </ScrollVIEw>        66:  源碼：

 1:  import android.app.Activity; 2:  import android.os.Bundle; 3:  import android.webkit.WebVIEw; 4:    5:  import com.example.android.apis.R; 6:    7:    8:  /** 9:   * Sample creating 10 webviews.10:   */11:  public class WebView1 extends Activity {12:   13:      @Override14:      public void onCreate(Bundle icicle) {15:          super.onCreate(icicle);16:   17:          setContentView(R.layout.webvIEw_1);18:   19:          final String mimeType = "text/Html";20:          final String encoding = "utf-8";21:   22:          WebView wv;23:   24:          wv = (WebView) findViewById(R.id.wv1);25:          wv.loadData("<a href='x'>Hello World! - 1</a>", mimeType, encoding);26:          27:          wv = (WebView) findViewById(R.id.wv2);28:          wv.loadData("<a href='x'>Hello World! - 2</a>", mimeType, encoding);29:          30:          wv = (WebView) findViewById(R.id.wv3);31:          wv.loadData("<a href='x'>Hello World! - 3</a>", mimeType, encoding);32:          33:          wv = (WebView) findViewById(R.id.wv4);34:          wv.loadData("<a href='x'>Hello World! - 4</a>", mimeType, encoding);35:          36:          wv = (WebView) findViewById(R.id.wv5);37:          wv.loadData("<a href='x'>Hello World! - 5</a>", mimeType, encoding);38:          39:          wv = (WebView) findViewById(R.id.wv6);40:          wv.loadData("<a href='x'>Hello World! - 6</a>", mimeType, encoding);41:          42:          wv = (WebView) findViewById(R.id.wv7);43:          wv.loadData("<a href='x'>Hello World! - 7</a>", mimeType, encoding);44:          45:          wv = (WebView) findViewById(R.id.wv8);46:          wv.loadData("<a href='x'>Hello World! - 8</a>", mimeType, encoding);47:          48:          wv = (WebView) findViewById(R.id.wv9);49:          wv.loadData("<a href='x'>Hello World! - 9</a>", mimeType, encoding);50:          51:          wv = (WebView) findVIEwById(R.id.wv10);52:          wv.loadData("<a href='x'>Hello World! - 10</a>", mimeType, encoding);53:      }54:  }