Android ApiDemo ——Graphics和View （4）

58.List11 多選List

 

源碼就這些：

注意第8行 final ListView listView = getListVIEw();獲得當前List

 1:  @Override 2:      public void onCreate(Bundle savedInstanceState) { 3:          super.onCreate(savedInstanceState); 4:    5:          setListAdapter(new ArrayAdapter<String>(this, 6:              android.R.layout.simple_list_item_multiple_choice, GENRES)); 7:    8:          final ListView listView = getListView(); 9:   10:          listView.setItemsCanFocus(false);11:          listView.setChoiceMode(ListVIEw.CHOICE_MODE_MULTIPLE);12:      }13:  

 59.List12 

布局由一個List+EditView組成 ，EditView正要輸入時可以自動跑到輸入法的上面。List裡顯示EditVIEw輸入的內容。並且List從最底部開始顯示

 

布局：

注意：第10行android:stackFromBottom="true" android:transcriptMode="normal"

通過設置的控件transcriptMode屬性可以將android平台的控件（支持ScrollBar）自動滑動到最底部

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android" 4:      android:orientation="vertical" android:layout_width="fill_parent" 5:      android:layout_height="fill_parent" android:paddingLeft="8dip" 6:      android:paddingRight="8dip"> 7:   8:      <ListVIEw android:id="@android:id/list" android:layout_width="fill_parent" 9:          android:layout_height="0dip" android:layout_weight="1"10:          android:stackFromBottom="true" android:transcriptMode="normal" />11:  12:      <EditText android:id="@+id/userText" android:layout_width="fill_parent"13:          android:layout_height="wrap_content" />14:  15:  </LinearLayout>源碼：

注意：第24行mAdapter.add(text);直接在ArrayAdapter裡加元素

 1:  @Override 2:  protected void onCreate(Bundle savedInstanceState) { 3:      super.onCreate(savedInstanceState); 4:    5:      setContentVIEw(R.layout.list_12); 6:    7:      mAdapter = new ArrayAdapter<String>(this, 8:          android.R.layout.simple_list_item_1, mStrings); 9:   10:      setListAdapter(mAdapter);11:   12:      mUserText = (EditText) findViewById(R.id.userText);13:   14:      mUserText.setOnClickListener(this);15:      mUserText.setOnKeyListener(this);16:  }17:   18:  public void onClick(View v) {19:      sendText();20:  }21:   22:  private void sendText() {23:      String text = mUserText.getText().toString();24:      mAdapter.add(text);25:      mUserText.setText(null);26:  }27:   28:  public boolean onKey(VIEw v, int keyCode, KeyEvent event) {29:      if (event.getAction() == KeyEvent.ACTION_DOWN) {30:          switch (keyCode) {31:          case KeyEvent.KEYCODE_DPAD_CENTER:32:          case KeyEvent.KEYCODE_ENTER:33:              sendText();34:              return true;35:          }36:      }37:      return false;38:  }

59.List14

 

在OnCreate裡給ListActivity設置了一個自定義的Adapter

1:  @Override2:  public void onCreate(Bundle savedInstanceState) {3:      super.onCreate(savedInstanceState);4:      setListAdapter(new EfficientAdapter(this));5:  }EfficIEctAdapter的構造裡直接從ListActivity獲得一個布局LayoutInflater，

注意：第3行mInflater = LayoutInflater.from(context);

 1:  public EfficientAdapter(Context context) { 2:          // Cache the LayoutInflate to avoid asking for a new one each time. 3:          mInflater = LayoutInflater.from(context); 4:    5:          // Icons bound to the rows. 6:          mIcon1 = BitmapFactory.decodeResource(context.getResources(), 7:              R.drawable.icon48x48_1); 8:          mIcon2 = BitmapFactory.decodeResource(context.getResources(), 9:              R.drawable.icon48x48_2);10:      }創建了一個用去存View的類VIEwHolder，

1:  static class ViewHolder {2:              TextView text;3:              ImageView icon;4:          }在EfficiectAdapter的getVIEw

注意：第13行convertView = mInflater.inflate(R.layout.list_item_icon_text, null);直接把convertVIEw 的布局設置成

R.layout.list_item_icon_text

convertView 為要顯示在Adapter中的VIEw

 1:  public View getView(int position, View convertView, ViewGroup parent) { 2:          // A ViewHolder keeps references to children views to avoid unneccessary 3:          // calls 4:          // to findViewById() on each row. 5:          ViewHolder holder; 6:    7:          // When convertView is not null, we can reuse it directly, there is no 8:          // need 9:          // to reinflate it. We only inflate a new View when the convertView10:          // supplied11:          // by ListView is null.12:          if (convertView == null) {13:              convertView = mInflater.inflate(R.layout.list_item_icon_text, null);14:   15:              // Creates a ViewHolder and store references to the two children views16:              // we want to bind data to.17:              holder = new ViewHolder();18:              holder.text = (TextView) convertView.findViewById(R.id.text);19:              holder.icon = (ImageView) convertView.findViewById(R.id.icon);20:   21:              convertView.setTag(holder);22:          } else {23:              // Get the VIEwHolder back to get fast Access to the TextView24:              // and the ImageView.25:              holder = (ViewHolder) convertView.getTag();26:          }27:   28:          // Bind the data efficiently with the holder.29:          holder.text.setText(DATA[position]);30:          holder.icon.setImageBitmap((position & 1) == 1 ? mIcon1 : mIcon2);31:   32:          return convertVIEw;33:      }

60.ProgressBar1 進度條

 

Layout布局中ProgressBar部分：

第2行是ProgressBar的style樣式，第5行為ProgressBar的最大值，第6行為默認ProgressBar的初始值，第7行為第二個ProgressBar的初始值

PorgressBar的style為style="?android:attr/progressBarStyleHorizontal"

1:  <ProgressBar android:id="@+id/progress_horizontal"2:        style="?android:attr/progressBarStyleHorizontal"3:        android:layout_width="200dip"4:        android:layout_height="wrap_content"5:        android:max="100"6:        android:progress="50"7:        android:secondaryProgress="75" />此程序在標題欄上顯示了ProgressBar，代碼如下：

第7，8行一定要乘與100，因為// Title progress is in range 0..10000，即標題攔的進度在0到10000之間

1:  // Request the progress bar to be shown in the title2:  requestWindowFeature(Window.FEATURE_PROGRESS);3:  setContentView(R.layout.progressbar_1);4:  setProgressBarVisibility(true);5:   6:  final ProgressBar progressHorizontal = (ProgressBar) findVIEwById(R.id.progress_horizontal);7:  setProgress(progressHorizontal.getProgress()*100);//無這兩句標題攔裡不顯示進度條ProgressBar,一條要乘與1008:  setSecondaryProgress(progressHorizontal.getSecondaryProgress() *100);加減進度條進度值的方法：

注意：progressHorizontal.incrementSecondaryProgressBy(-1); 正數為加，負數為減

1:  Button button = (Button) findViewById(R.id.increase);2:          button.setOnClickListener(new Button.OnClickListener() {3:              public void onClick(View v) {4:                  progressHorizontal.incrementProgressBy(1);5:                  // Title progress is in range 0..100006:                  setProgress(100 * progressHorizontal.getProgress());7:              }8:          });1:  button = (Button) findViewById(R.id.decrease_secondary);2:          button.setOnClickListener(new Button.OnClickListener() {3:              public void onClick(VIEw v) {4:                  progressHorizontal.incrementSecondaryProgressBy(-1);5:                  // Title progress is in range 0..100006:                  setSecondaryProgress(100 * progressHorizontal7:                          .getSecondaryProgress());8:              }9:          });

61.ProgressBar2 進度條

 

上面顯示了4個ProgressBar ,布局為：

注意：style="?android:attr/progressBarStyleLarge" style="?android:attr/progressBarStyleSmall"  style="?android:attr/progressBarStyleSmallTitle"

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android"  4:      android:orIEntation="vertical" 5:      android:layout_width="fill_parent" 6:      android:layout_height="wrap_content"> 7:   8:      <ProgressBar android:id="@+android:id/progress_large" 9:          style="?android:attr/progressBarStyleLarge"10:          android:layout_width="wrap_content"11:          android:layout_height="wrap_content" />12:  13:      <ProgressBar android:id="@+android:id/progress"14:          android:layout_width="wrap_content"15:          android:layout_height="wrap_content" />16:  17:      <ProgressBar android:id="@+android:id/progress_small"18:          style="?android:attr/progressBarStyleSmall"19:          android:layout_width="wrap_content"20:          android:layout_height="wrap_content" />21:  22:      <ProgressBar android:id="@+android:id/progress_small_title"23:          style="?android:attr/progressBarStyleSmallTitle"24:          android:layout_width="wrap_content"25:          android:layout_height="wrap_content" />26:  27:  </LinearLayout>28:  最後在OnCreate裡

1:  // Request for the progress bar to be shown in the title2:          requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);3:   4:          setContentVIEw(R.layout.progressbar_2);5:   6:          // Make sure the progress bar is visible7:          setProgressBarVisibility(true);

62. ProgressBar3

 

此程序為兩個按鈕，上面的激活帶標題的ProgressDialog  ,下面激活不帶標題的ProgressDialog

OnCreate方法：

 1:  private static final int DIALOG1_KEY = 0; 2:  private static final int DIALOG2_KEY = 1; 3:    4:  @Override 5:  protected void onCreate(Bundle savedInstanceState) { 6:      super.onCreate(savedInstanceState); 7:    8:      setContentView(R.layout.progressbar_3); 9:   10:      Button button = (Button) findViewById(R.id.showIndeterminate);11:      button.setOnClickListener(new View.OnClickListener() {12:          public void onClick(View v) {13:              showDialog(DIALOG1_KEY);14:          }15:      });16:   17:      button = (Button) findViewById(R.id.showIndeterminateNoTitle);18:      button.setOnClickListener(new View.OnClickListener() {19:          public void onClick(VIEw v) {20:              showDialog(DIALOG2_KEY);21:          }22:      });23:  }由showDialog(DIALOG2_KEY) 激活對話框的方法：

 1:  @Override 2:  protected Dialog onCreateDialog(int id) { 3:      switch (id) { 4:      case DIALOG1_KEY: { 5:          ProgressDialog dialog = new ProgressDialog(this); 6:          dialog.setTitle("Indeterminate"); 7:          dialog.setMessage("Please wait while loading..."); 8:          dialog.setIndeterminate(true); 9:          dialog.setCancelable(true);10:          return dialog;11:      }12:      case DIALOG2_KEY: {13:          ProgressDialog dialog = new ProgressDialog(this);14:          dialog.setMessage("Please wait while loading...");15:          dialog.setIndeterminate(true);16:          dialog.setCancelable(true);17:          return dialog;18:      }19:      }20:      return null;21:  }

63.ProgressBar4  在標題欄顯示進度條（右上角）

 

源碼：

 1:  private boolean mToggleIndeterminate = false; 2:    3:      @Override 4:      protected void onCreate(Bundle savedInstanceState) { 5:          super.onCreate(savedInstanceState); 6:    7:          // Request progress bar 8:          requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);//一定要有 9:          setContentView(R.layout.progressbar_4);10:          setProgressBarIndeterminateVisibility(mToggleIndeterminate);//Whether to show the progress bars in the title11:  12:          Button button = (Button) findViewById(R.id.toggle);13:          button.setOnClickListener(new Button.OnClickListener() {14:              public void onClick(VIEw v) {15:                  mToggleIndeterminate = !mToggleIndeterminate;16:                  setProgressBarIndeterminateVisibility(mToggleIndeterminate);17:              }18:          });19:      }

64.RadioGroup1

 

布局：一個RadioGroup裡有4個RadioButton，默認被選定的是android:checkedButton="@+id/lunch"

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:   4:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android" 5:      android:layout_width="fill_parent" 6:      android:layout_height="fill_parent" 7:      android:orientation="vertical"> 8:      <RadioGroup 9:          android:layout_width="fill_parent"10:          android:layout_height="wrap_content"11:          android:orientation="vertical"12:          android:checkedButton="@+id/lunch"13:          android:id="@+id/menu">14:          <RadioButton15:              android:text="@string/radio_group_1_breakfast"16:              android:id="@+id/breakfast"17:              />18:          <RadioButton19:              android:text="@string/radio_group_1_lunch"20:              android:id="@id/lunch" />21:          <RadioButton22:              android:text="@string/radio_group_1_dinner"23:              android:id="@+id/dinner" />24:          <RadioButton25:              android:text="@string/radio_group_1_all"26:              android:id="@+id/all" />27:          <TextVIEw28:              android:text="@string/radio_group_1_selection"29:              android:id="@+id/choice" />30:      </RadioGroup>31:      <Button32:          android:layout_width="wrap_content"33:          android:layout_height="wrap_content"34:          android:text="@string/radio_group_1_clear"35:          android:id="@+id/clear" />36:  </LinearLayout>源碼：

在第9行到15行動態往RadioGroup裡addVIEw加入了一個RadioButton,

第19行設置選擇改變setOnCheckedChangeListener(this),在第28行實現了onCheckedChanged方法

 1:  @Override 2:      protected void onCreate(Bundle savedInstanceState) { 3:          super.onCreate(savedInstanceState); 4:    5:          setContentView(R.layout.radio_group_1); 6:          mRadioGroup = (RadioGroup) findViewById(R.id.menu); 7:    8:          // test adding a radio button programmatically 9:          RadioButton newRadioButton = new RadioButton(this);10:          newRadioButton.setText(R.string.radio_group_snack);11:          newRadioButton.setId(R.id.snack);12:          LinearLayout.LayoutParams layoutParams = new RadioGroup.LayoutParams(13:                  RadioGroup.LayoutParams.WRAP_CONTENT,14:                  RadioGroup.LayoutParams.WRAP_CONTENT);15:          mRadioGroup.addView(newRadioButton, 0, layoutParams);16:   17:          // test listening to checked change events18:          String selection = getString(R.string.radio_group_selection);19:          mRadioGroup.setOnCheckedChangeListener(this);20:          mChoice = (TextView) findViewById(R.id.choice);21:          mChoice.setText(selection + mRadioGroup.getCheckedRadioButtonId());22:   23:          // test clearing the selection24:          Button clearButton = (Button) findViewById(R.id.clear);25:          clearButton.setOnClickListener(this);26:      }27:   28:      public void onCheckedChanged(RadioGroup group, int checkedId) {29:          String selection = getString(R.string.radio_group_selection);30:          String none = getString(R.string.radio_group_none);31:          mChoice.setText(selection32:                  + (checkedId == View.NO_ID ? none : checkedId));33:      }34:  35:      public void onClick(VIEw v) {36:          mRadioGroup.clearCheck();37:      }

65.

 

布局：

注意：第12行，18行的android:numStars="3"星數 第13行，19行的android:rating="2.5" 默認初始值

第31行，40行的樣式 style="?android:attr/ratingBarStyleSmall"   style="?android:attr/ratingBarStyleIndicator"

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android" 4:      android:orientation="vertical" 5:      android:paddingLeft="10dip" 6:      android:layout_width="fill_parent" 7:      android:layout_height="fill_parent"> 8:   9:      <RatingBar android:id="@+id/ratingbar1"10:          android:layout_width="wrap_content"11:          android:layout_height="wrap_content"12:          android:numStars="3"13:          android:rating="2.5" />14:  15:      <RatingBar android:id="@+id/ratingbar2"16:          android:layout_width="wrap_content"17:          android:layout_height="wrap_content"18:          android:numStars="5"19:          android:rating="2.25" />20:  21:      <LinearLayout22:          android:layout_width="fill_parent"23:          android:layout_height="wrap_content"24:          android:layout_marginTop="10dip">25:          26:          <TextVIEw android:id="@+id/rating"27:              android:layout_width="wrap_content"28:              android:layout_height="wrap_content" />29:              30:          <RatingBar android:id="@+id/small_ratingbar"31:              style="?android:attr/ratingBarStyleSmall"32:              android:layout_marginLeft="5dip"33:              android:layout_width="wrap_content"34:              android:layout_height="wrap_content"35:              android:layout_gravity="center_vertical" />36:              37:      </LinearLayout>38:  39:      <RatingBar android:id="@+id/indicator_ratingbar"40:          style="?android:attr/ratingBarStyleIndicator"41:          android:layout_marginLeft="5dip"42:          android:layout_width="wrap_content"43:          android:layout_height="wrap_content"44:          android:layout_gravity="center_vertical" />45:              46:  </LinearLayout>

47:  mIndicatorRatingBar mSmallRatingBar兩個變量為 這兩個RatingBar

 1:  // We copy the most recently changed rating on to these indicator-only 2:          // rating bars 3:          mIndicatorRatingBar = (RatingBar) findViewById(R.id.indicator_ratingbar); 4:          mSmallRatingBar = (RatingBar) findViewById(R.id.small_ratingbar); 5:   6:          // The different rating bars in the layout. Assign the listener to us. 7:          ((RatingBar) findViewById(R.id.ratingbar1)) 8:                  .setOnRatingBarChangeListener(this); 9:          ((RatingBar) findVIEwById(R.id.ratingbar2))10:                  .setOnRatingBarChangeListener(this);第7到第10行setOnRatingBarChangeListener(this);方法內來改變

 1:  public void onRatingChanged(RatingBar ratingBar, float rating, 2:              boolean fromTouch) { 3:          final int numStars = ratingBar.getNumStars(); 4:          mRatingText.setText(getString(R.string.ratingbar_rating) + " " + rating 5:                  + "/" + numStars); 6:    7:          // Since this rating bar is updated to reflect any of the other rating 8:          // bars, we should update it to the current values. 9:          if (mIndicatorRatingBar.getNumStars() != numStars) {10:              mIndicatorRatingBar.setNumStars(numStars);11:              mSmallRatingBar.setNumStars(numStars);12:          }13:          if (mIndicatorRatingBar.getRating() != rating) {14:              mIndicatorRatingBar.setRating(rating);15:              mSmallRatingBar.setRating(rating);16:          }17:          final float ratingBarStepSize = ratingBar.getStepSize();18:          if (mIndicatorRatingBar.getStepSize() != ratingBarStepSize) {19:              mIndicatorRatingBar.setStepSize(ratingBarStepSize);20:              mSmallRatingBar.setStepSize(ratingBarStepSize);21:          }22:      }當ratingBar為三個星時，

當ratingBar為五個星時，

66.ScrollBar1

 

它就在布局XML文件裡的ScrollView裡加入了N個TextVIEw

 1:  <ScrollVIEw XMLns:android="http://schemas.android.com/apk/res/android" 2:      android:layout_width="fill_parent" 3:      android:layout_height="wrap_content"> 4:   5:      <LinearLayout 6:          android:orientation="vertical" 7:          android:layout_width="fill_parent" 8:          android:layout_height="wrap_content"> 9:  10:          <TextView11:              android:layout_width="fill_parent"12:              android:layout_height="wrap_content"13:              android:text="@string/scrollbar_1_text"/>14:          <TextView15:              android:layout_width="fill_parent"16:              android:layout_height="wrap_content"17:              android:text="@string/scrollbar_1_text"/>18:          <TextVIEw19:              android:layout_width="fill_parent"20:              android:layout_height="wrap_content"21:              android:text="@string/scrollbar_1_text"/>

67.ScrollBar2

 

和上面的例子就差在顏色上，

注意第4.5行的android:scrollbarTrackVertical="@drawable/scrollbar_vertical_track" android:scrollbarThumbVertical="@drawable/scrollbar_vertical_thumb"

 1:  <ScrollView xmlns:android="http://schemas.android.com/apk/res/android" 2:      android:layout_width="fill_parent" 3:      android:layout_height="wrap_content" 4:      android:scrollbarTrackVertical="@drawable/scrollbar_vertical_track" 5:      android:scrollbarThumbVertical="@drawable/scrollbar_vertical_thumb" 6:      android:scrollbarSize="12dip"> 7:   8:      <LinearLayout 9:          android:orientation="vertical"10:          android:layout_width="fill_parent"11:          android:layout_height="wrap_content">12:  13:          <TextView14:              android:layout_width="fill_parent"15:              android:layout_height="wrap_content"16:              android:text="@string/scrollbar_2_text"/>17:          <TextVIEw18:              android:layout_width="fill_parent"19:              android:layout_height="wrap_content"20:              android:text="@string/scrollbar_2_text"/>scrollbar_vertical_track.XML

1:  <?xml version="1.0" encoding="utf-8"?>2:  3:  4:  <shape xmlns:android="http://schemas.android.com/apk/res/android">5:      <gradIEnt android:startColor="#505050" android:endColor="#C0C0C0"6:              android:angle="0"/>7:      <corners android:radius="0dp" />8:  </shape>9:  scrollbar_vertical_thumb.XML

1:  <?xml version="1.0" encoding="utf-8"?>2:  3:  <shape XMLns:android="http://schemas.android.com/apk/res/android">4:      <gradIEnt android:startColor="#3333FF" android:endColor="#8080FF"5:              android:angle="0"/>6:      <corners android:radius="6dp" />7:  </shape>8: 

68.ScrollBar3

第4行設置style 

1:   2:  setContentView(R.layout.scrollbar3);3:   4:  findViewById(R.id.view3).setScrollBarStyle(VIEw.SCROLLBARS_INSIDE_INSET);布局：

注意：第114行的style   android:scrollbarStyle="outsideInset"

  1:  <?xml version="1.0" encoding="utf-8"?>  2:    3:    4:  <!-- Demonstrates scrolling with a ScrollVIEw. -->  5:    6:  <LinearLayout  7:      XMLns:android="http://schemas.android.com/apk/res/android"  8:      android:layout_width="fill_parent"  9:      android:layout_height="fill_parent" 10:      android:orientation="vertical"> 11:   12:      <LinearLayout 13:          android:layout_width="fill_parent" 14:          android:layout_height="wrap_content" 15:          android:orientation="horizontal"> 16:   17:          <ScrollView 18:              android:layout_width="100dip" 19:              android:layout_height="120dip" 20:              android:background="#FF0000"> 21:              <LinearLayout 22:                  android:orientation="vertical" 23:                  android:layout_width="fill_parent" 24:                  android:layout_height="fill_parent"> 25:   26:                  <TextView 27:                      android:layout_width="fill_parent" 28:                      android:layout_height="wrap_content" 29:                      android:text="@string/scrollbar_2_text" /> 30:                  <TextView 31:                      android:layout_width="fill_parent" 32:                      android:layout_height="wrap_content" 33:                      android:text="@string/scrollbar_2_text" /> 34:                  <TextView 35:                      android:layout_width="fill_parent" 36:                      android:layout_height="wrap_content" 37:                      android:text="@string/scrollbar_2_text" /> 38:                  <TextView 39:                      android:layout_width="fill_parent" 40:                      android:layout_height="wrap_content" 41:                      android:text="@string/scrollbar_2_text" /> 42:                  <TextView 43:                      android:layout_width="fill_parent" 44:                      android:layout_height="wrap_content" 45:                      android:text="@string/scrollbar_2_text" /> 46:                  <TextView 47:                      android:layout_width="fill_parent" 48:                      android:layout_height="wrap_content" 49:                      android:text="@string/scrollbar_2_text" /> 50:                  <TextView 51:                      android:layout_width="fill_parent" 52:                      android:layout_height="wrap_content" 53:                      android:text="@string/scrollbar_2_text" /> 54:                  <TextView 55:                      android:layout_width="fill_parent" 56:                      android:layout_height="wrap_content" 57:                      android:text="@string/scrollbar_2_text" /> 58:                  <TextView 59:                      android:layout_width="fill_parent" 60:                      android:layout_height="wrap_content" 61:                      android:text="@string/scrollbar_2_text" /> 62:                  <TextView 63:                      android:layout_width="fill_parent" 64:                      android:layout_height="wrap_content" 65:                      android:text="@string/scrollbar_2_text" /> 66:              </LinearLayout> 67:          </ScrollView> 68:   69:          <ScrollView 70:              android:layout_width="100dip" 71:              android:layout_height="120dip" 72:              android:background="#00FF00" 73:              android:paddingRight="12dip"> 74:              <TextView 75:                  android:layout_width="fill_parent" 76:                  android:layout_height="wrap_content" 77:                  android:text="@string/scrollbar_3_text" 78:                  android:textColor="#000000" 79:                  android:background="#60AA60" /> 80:          </ScrollView> 81:   82:          <ScrollView 83:              android:id="@+id/view3" 84:              android:layout_width="100dip" 85:              android:layout_height="120dip" 86:              android:background="@android:drawable/edit_text"> 87:              <TextView 88:                  android:layout_width="fill_parent" 89:                  android:layout_height="wrap_content" 90:                  android:textColor="#000000" 91:                  android:text="@string/scrollbar_3_text" /> 92:          </ScrollView> 93:      </LinearLayout> 94:   95:      <LinearLayout 96:          android:layout_width="fill_parent" 97:          android:layout_height="wrap_content"> 98:          <ScrollView 99:              android:id="@+id/view4"100:              android:layout_width="100dip"101:              android:layout_height="120dip"102:              android:scrollbarStyle="outsideOverlay"103:              android:background="@android:drawable/edit_text">104:              <TextView105:                  android:layout_width="fill_parent"106:                  android:layout_height="wrap_content"107:                  android:textColor="#000000"108:                  android:text="@string/scrollbar_3_text" />109:          </ScrollView>110:          <ScrollView111:              android:id="@+id/view5"112:              android:layout_width="100dip"113:              android:layout_height="120dip"114:              android:scrollbarStyle="outsideInset"115:              android:background="@android:drawable/edit_text">116:              <TextVIEw117:                  android:layout_width="fill_parent"118:                  android:layout_height="wrap_content"119:                  android:textColor="#000000"120:                  android:text="@string/scrollbar_3_text" />121:          </ScrollVIEw>122:      </LinearLayout>123:  </LinearLayout>124: 

69.SeekBar1

 

布局：

 1:  <?xml version="1.0" encoding="utf-8"?> 2:   3:  <LinearLayout XMLns:android="http://schemas.android.com/apk/res/android" 4:      android:orientation="vertical" 5:      android:layout_width="fill_parent" 6:      android:layout_height="fill_parent"> 7:   8:      <SeekBar android:id="@+id/seek" 9:          android:layout_width="fill_parent"10:          android:layout_height="wrap_content"11:          android:max="100"12:          android:progress="50"13:          android:secondaryProgress="75" />14:  15:      <TextView android:id="@+id/progress"16:             android:layout_width="fill_parent"17:          android:layout_height="wrap_content" />18:  19:      <TextVIEw android:id="@+id/tracking"20:             android:layout_width="fill_parent"21:          android:layout_height="wrap_content" />22:  </LinearLayout>源碼：

 1:  SeekBar mSeekBar; 2:      TextView mProgressText; 3:      TextView mTrackingText; 4:    5:      @Override 6:      protected void onCreate(Bundle savedInstanceState) { 7:          super.onCreate(savedInstanceState); 8:    9:          setContentView(R.layout.seekbar_1);10:   11:          mSeekBar = (SeekBar) findViewById(R.id.seek);12:          mSeekBar.setOnSeekBarChangeListener(this);13:          mProgressText = (TextView) findViewById(R.id.progress);14:          mTrackingText = (TextView) findVIEwById(R.id.tracking);15:      }16:   17:      public void onProgressChanged(SeekBar seekBar, int progress,18:              boolean fromTouch) {19:          mProgressText.setText(progress + " "20:                  + getString(R.string.seekbar_from_touch) + "=" + fromTouch);21:      }22:  23:      public void onStartTrackingTouch(SeekBar seekBar) {24:          mTrackingText.setText(getString(R.string.seekbar_tracking_on));25:      }26:  27:      public void onStopTrackingTouch(SeekBar seekBar) {28:          mTrackingText.setText(getString(R.string.seekbar_tracking_off));29:      }