android 之控件篇

来源：互联网发布：java orm 编辑：程序博客网时间：2024/06/08 10:19

1.Menu：菜单，点击菜单键后弹出的选项菜单

private boolean isMore = false;// menu菜单翻页控制AlertDialog menuDialog;// menu菜单DialogGridView menuGrid;View menuView;private final int ITEM_SEARCH = 0;// 搜索private final int ITEM_FILE_MANAGER = 1;// 文件管理private final int ITEM_DOWN_MANAGER = 2;// 下载管理private final int ITEM_FULLSCREEN = 3;// 全屏private final int ITEM_MORE = 11;// 菜单/** 菜单图片 **/int[] menu_image_array = { R.drawable.menu_search, R.drawable.menu_filemanager, R.drawable.menu_downmanager,R.drawable.menu_fullscreen, R.drawable.menu_inputurl, R.drawable.menu_bookmark,R.drawable.menu_bookmark_sync_import, R.drawable.menu_sharepage, R.drawable.menu_quit,R.drawable.menu_nightmode, R.drawable.menu_refresh, R.drawable.menu_more };/** 菜单文字 **/String[] menu_name_array = { "搜索", "文件管理", "下载管理", "全屏", "网址", "书签", "加入书签", "分享页面", "退出", "夜间模式", "刷新", "更多" };/** 菜单图片2 **/int[] menu_image_array2 = { R.drawable.menu_auto_landscape, R.drawable.menu_penselectmodel,R.drawable.menu_page_attr, R.drawable.menu_novel_mode, R.drawable.menu_page_updown,R.drawable.menu_checkupdate, R.drawable.menu_checknet, R.drawable.menu_refreshtimer,R.drawable.menu_syssettings, R.drawable.menu_help, R.drawable.menu_about, R.drawable.menu_return };/** 菜单文字2 **/String[] menu_name_array2 = { "自动横屏", "笔选模式", "阅读模式", "浏览模式", "快捷翻页", "检查更新", "检查网络", "定时刷新", "设置", "帮助", "关于","返回" };<pre class="html" name="code">@Overrideprotected void onCreate(Bundle savedInstanceState) {// TODO Auto-generated method stubsuper.onCreate(savedInstanceState);setContentView(R.layout.activity_main);/************复选框*********///根据ID找到该文本控件        tv = (TextView)this.findViewById(R.id.tvSex);        //根据ID找到RadioGroup实例        RadioGroup group = (RadioGroup)this.findViewById(R.id.radioGroup);        //绑定一个匿名监听器        group.setOnCheckedChangeListener(new OnCheckedChangeListener() {                        @Override            public void onCheckedChanged(RadioGroup arg0, int arg1) {                // TODO Auto-generated method stub                //获取变更后的选中项的ID                int radioButtonId = arg0.getCheckedRadioButtonId();                //根据ID获取RadioButton的实例                RadioButton rb = (RadioButton)MainActivity.this.findViewById(radioButtonId);                //更新文本内容，以符合选中项                tv.setText("您的性别是：" + rb.getText());            }        });menuView = View.inflate(this, R.layout.gridview_menu, null);// 找出main下面的gridview_menu// 创建AlertDialogmenuDialog = new AlertDialog.Builder(this).create();menuDialog.setView(menuView);menuDialog.setOnKeyListener(new OnKeyListener() {public boolean onKey(DialogInterface dialog, int keyCode, KeyEvent event) {if (keyCode == KeyEvent.KEYCODE_MENU)// 监听按键dialog.dismiss();return false;}});menuGrid = (GridView) menuView.findViewById(R.id.gridview);menuGrid.setAdapter(getMenuAdapter(menu_name_array, menu_image_array));/** 监听menu选项 **/menuGrid.setOnItemClickListener(new OnItemClickListener() {public void onItemClick(AdapterView<?> arg0, View arg1, int arg2, long arg3) {switch (arg2) {case ITEM_SEARCH:// 搜索break;case ITEM_FILE_MANAGER:// 文件管理break;case ITEM_DOWN_MANAGER:// 下载管理break;case ITEM_FULLSCREEN:// 全屏break;case ITEM_MORE:// 翻页if (isMore) {menuGrid.setAdapter(getMenuAdapter(menu_name_array2, menu_image_array2));isMore = false;} else {// 首页menuGrid.setAdapter(getMenuAdapter(menu_name_array, menu_image_array));isMore = true;}menuGrid.invalidate();// 更新menumenuGrid.setSelection(ITEM_MORE);break;}}});}@Overridepublic boolean onCreateOptionsMenu(Menu menu) {menu.add("menu");// 必须创建一项return super.onCreateOptionsMenu(menu);}private SimpleAdapter getMenuAdapter(String[] menuNameArray, int[] imageResourceArray) {ArrayList<HashMap<String, Object>> data = new ArrayList<HashMap<String, Object>>();for (int i = 0; i < menuNameArray.length; i++) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("itemImage", imageResourceArray[i]);map.put("itemText", menuNameArray[i]);data.add(map);}SimpleAdapter simperAdapter = new SimpleAdapter(this, data, R.layout.item_menu,new String[] { "itemImage", "itemText" }, new int[] { R.id.item_image, R.id.item_text });return simperAdapter;}@Overridepublic boolean onMenuOpened(int featureId, Menu menu) {if (menuDialog == null) {menuDialog = new AlertDialog.Builder(this).setView(menuView).show();} else {menuDialog.show();}return false;// 返回为true 则显示系统menu}

2.Toast是Android中用来显示显示信息的一种机制，和Dialog不一样的是，Toast是没有焦点的，而且Toast显示的时间有限，过一定的时间就会自动消失。而且Toast主要用于向用户显示提示消息，当然大家也可以根据自己的需求来自定义自己想要的效果。

Toast.makeText(getApplicationContext(), "默认Toast样式",     Toast.LENGTH_SHORT).show();

toast = Toast.makeText(getApplicationContext(),     "自定义位置Toast", Toast.LENGTH_LONG);   toast.setGravity(Gravity.CENTER, 0, 0);   toast.show();

toast = Toast.makeText(getApplicationContext(),     "带图片的Toast", Toast.LENGTH_LONG);   toast.setGravity(Gravity.CENTER, 0, 0);   LinearLayout toastView = (LinearLayout) toast.getView();   ImageView imageCodeProject = new ImageView(getApplicationContext());   imageCodeProject.setImageResource(R.drawable.icon);   toastView.addView(imageCodeProject, 0);   toast.show();

LayoutInflater inflater = getLayoutInflater();   View layout = inflater.inflate(R.layout.custom,     (ViewGroup) findViewById(R.id.llToast));   ImageView image = (ImageView) layout     .findViewById(R.id.tvImageToast);   image.setImageResource(R.drawable.icon);   TextView title = (TextView) layout.findViewById(R.id.tvTitleToast);   title.setText("Attention");   TextView text = (TextView) layout.findViewById(R.id.tvTextToast);   text.setText("完全自定义Toast");   toast = new Toast(getApplicationContext());   toast.setGravity(Gravity.RIGHT | Gravity.TOP, 12, 40);   toast.setDuration(Toast.LENGTH_LONG);   toast.setView(layout);   toast.show();

new Thread(new Runnable() {    public void run() {     showToast();    }   }).start();

3.Progressbar

(1) 带有进度条的 ProgressBar

MainActivity.java

public class MainActivity extends Activity {@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);// Request the progress bar to be shown in the titlerequestWindowFeature(Window.FEATURE_PROGRESS);setContentView(R.layout.activity_main);setProgressBarVisibility(true);// 设置在title里的ProgressBar可见final ProgressBar progressHorizontal = (ProgressBar) findViewById(R.id.progress_horizontal);setProgress(progressHorizontal.getProgress() * 100);// 为title中的ProgressBar设置进度setSecondaryProgress(progressHorizontal.getSecondaryProgress() * 100);// 为title中的ProgressBar设置二级进度Button button = (Button) findViewById(R.id.increase);// 一级进度递增button.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {progressHorizontal.incrementProgressBy(1);// Title progress is in range 0..10000setProgress(100 * progressHorizontal.getProgress());// 为title中的ProgressBar设置进度}});button = (Button) findViewById(R.id.decrease);// 一级进度递减button.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {progressHorizontal.incrementProgressBy(-1);// Title progress is in range 0..10000setProgress(100 * progressHorizontal.getProgress());// 为title中的ProgressBar设置进度}});button = (Button) findViewById(R.id.increase_secondary);// 二级进度递增button.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {progressHorizontal.incrementSecondaryProgressBy(1);// Title progress is in range 0..10000setSecondaryProgress(100 * progressHorizontal.getSecondaryProgress());}});button = (Button) findViewById(R.id.decrease_secondary);// 二级进度递减button.setOnClickListener(new Button.OnClickListener() {public void onClick(View v) {progressHorizontal.incrementSecondaryProgressBy(-1);// Title progress is in range 0..10000setSecondaryProgress(100 * progressHorizontal.getSecondaryProgress());}});}}

activity_main.xml

    <ProgressBar android:id="@+id/progress_horizontal"        style="?android:attr/progressBarStyleHorizontal"        android:layout_width="200dip"        android:layout_height="wrap_content"        android:max="100"        android:progress="50"        android:secondaryProgress="75" />        <Button        android:id="@+id/increase"        android:layout_width="100dp"        android:layout_height="80dp"        android:layout_marginTop="100dp"        android:layout_marginLeft="50dp"        />    <Button        android:id="@+id/decrease"        android:layout_width="100dp"        android:layout_height="80dp"        android:layout_marginTop="100dp"        android:layout_marginLeft="150dp"/>            <Button        android:id="@+id/increase_secondary"        android:layout_width="100dp"        android:layout_height="80dp"        android:layout_marginTop="200dp"        android:layout_marginLeft="50dp"/>       <Button        android:id="@+id/decrease_secondary"        android:layout_width="100dp"        android:layout_height="80dp"        android:layout_marginTop="200dp"        android:layout_marginLeft="150dp"/>

实现的效果

转圈样式的ProgressBar

MainActivity.java

</pre><pre class="html" name="code">  // Request for the progress bar to be shown in the title        requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);                setContentView(R.layout.activity_main);                // Make sure the progress bar is visible        setProgressBarVisibility(true);

activity_main.xml

    <!-- 大样式 -->    <ProgressBar        android:id="@+id/progress_large"        style="?android:attr/progressBarStyleLarge"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <!-- 默认 -->    <ProgressBar        android:id="@+android:id/progress"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <!-- 小样式 -->    <ProgressBar        android:id="@+id/progress_small"        style="?android:attr/progressBarStyleSmall"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />    <!-- 小标题样式 -->    <ProgressBar        android:id="@+id/progress_small_title"        style="?android:attr/progressBarStyleSmallTitle"        android:layout_width="wrap_content"        android:layout_height="wrap_content" />

实现效果

（3）对话框样式的进度

MainActivity.java

private static final int DIALOG1_KEY = 0;    private static final int DIALOG2_KEY = 1;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        Button button = (Button) findViewById(R.id.showIndeterminate);        button.setOnClickListener(new View.OnClickListener() {            public void onClick(View v) {                showDialog(DIALOG1_KEY);            }        });        button = (Button) findViewById(R.id.showIndeterminateNoTitle);        button.setOnClickListener(new View.OnClickListener() {            public void onClick(View v) {                showDialog(DIALOG2_KEY);            }        });    }    @Override    protected Dialog onCreateDialog(int id) {        switch (id) {            case DIALOG1_KEY: {                ProgressDialog dialog = new ProgressDialog(this);                dialog.setTitle("Indeterminate");                dialog.setMessage("Please wait while loading...");                dialog.setIndeterminate(true);//设置转圈的效果                dialog.setCancelable(true);                return dialog;            }            case DIALOG2_KEY: {                ProgressDialog dialog = new ProgressDialog(this);                dialog.setMessage("Please wait while loading...");                dialog.setIndeterminate(true);//设置转圈的效果                dialog.setCancelable(true);                return dialog;            }        }        return null;    }

activity_main.xml

<Button        android:id="@+id/showIndeterminate"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@+id/progress_large"        android:layout_marginTop="72dp"        android:layout_toRightOf="@+id/progress_small"        android:text="Button" />    <Button        android:id="@+id/showIndeterminateNoTitle"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignBaseline="@+id/showIndeterminate"        android:layout_alignBottom="@+id/showIndeterminate"        android:layout_alignParentRight="true"        android:layout_marginRight="52dp"        android:text="Button" />

效果图

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