Android的简单组件总结

常用组件的总结：

提示框的使用：

new AlertDialog.Builder(this)   .setTitle("title")   .setMessage("bla..bla")   .setPositiveButton("OK", new DialogInterface.OnClickListener() {   @Override   public void onClick(DialogInterface dialog, int which) {   }   })   .show();

自动提示输入框的使用：

// 通过ID查找到main.xml中的AutoCompleteTextView控件autoCompleteTextView = (AutoCompleteTextView) findViewById(R.id.autocompleteTv);// 设定一个Array适配器,将数组数据放入适配器中adapter = new ArrayAdapter<String>(this,android.R.layout.simple_dropdown_item_1line, item);// 对AutoCompleteTextView进行适配autoCompleteTextView.setAdapter(adapter);//设置AutoCompleteTextView的监听器autoCompleteTextView.setOnItemClickListener(new OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3){String str = "这次妖精把" + autoCompleteTextView.getText().toString()+ "抓住了!";updateText(str);}});// 通过ID查找到main.xml中的MultiAutoCompleteTextView控件multiAutoCompleteTextView = (MultiAutoCompleteTextView) findViewById(R.id.multiAutoCompleteTextView);// 对MultiAutoCompleteTextView进行适配multiAutoCompleteTextView.setAdapter(adapter);//设置分隔符,默认的是逗号(,)multiAutoCompleteTextView.setTokenizer(new MultiAutoCompleteTextView.CommaTokenizer());   //设置MultiAutoCompleteTextView的监听器multiAutoCompleteTextView.setOnItemClickListener(new OnItemClickListener(){@Overridepublic void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3){String str = "这次妖精把" + multiAutoCompleteTextView.getText().toString()+ "抓住了!";updateText(str);}});

多个复选框的使用：

/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.chkgrp_layout);// 通过ID查找到main.xml中的RadioButton控件tangseng= (CheckBox) findViewById(R.id.tangsengchk);wukong= (CheckBox) findViewById(R.id.sunwukongchk);bajie= (CheckBox) findViewById(R.id.zhubajiechk);shazeng= (CheckBox) findViewById(R.id.shaheshangchk);// 通过ID查找到main.xml中的Button控件button = (Button) findViewById(R.id.mpbtn);text = (TextView) findViewById(R.id.mtvInfo);// 为Button控件增加单击监听器button.setOnClickListener(this);}@Override    public void onClick(View v)      {          String str = "";          //唐僧单选框被选中           if(tangseng.isChecked()){              str += "唐僧~";          }          //悟空单选框被选中           else if(wukong.isChecked()){              str += "悟空~";          }          //八戒单选框被选中           else if(bajie.isChecked()){              str += "八戒~";          }          //沙僧单选框被选中           else if(shazeng.isChecked()){              str += "沙僧~";          }          //没有人被选中           else if(str.equals("")){              str += "没有人";          }          str +="被妖精抓走了！";          updateText(str);            }

单选按钮组的使用：

/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.radiogrp_layout);// 通过ID查找到main.xml中的RadioButton控件tangseng= (RadioButton) findViewById(R.id.tangseng);wukong= (RadioButton) findViewById(R.id.sunwukong);bajie= (RadioButton) findViewById(R.id.zhubajie);shazeng= (RadioButton) findViewById(R.id.shaheshang);// 通过ID查找到main.xml中的Button控件Button button = (Button) findViewById(R.id.pbtn);text= (TextView) findViewById(R.id.tvInfo);// 为Button控件增加单击监听器button.setOnClickListener(this);}@Override    public void onClick(View v)      {          String str = "";          //唐僧单选框被选中           if(tangseng.isChecked()){              str += "唐僧~";          }          //悟空单选框被选中           if(wukong.isChecked()){              str += "悟空~";          }          //八戒单选框被选中           if(bajie.isChecked()){              str += "八戒~";          }          //沙僧单选框被选中           if(shazeng.isChecked()){              str += "沙僧~";          }          //没有人被选中           if(str.equals("")){              str += "没有人";          }          str +="被妖精抓走了！";                    updateText(str);            }

时间选择器的使用：

@Override    protected Dialog onCreateDialog(int id) {           //用来获取日期和时间的           Calendar calendar = Calendar.getInstance();                 Dialog dialog = null;           switch(id) {               case DATE_DIALOG:                   DatePickerDialog.OnDateSetListener dateListener =                       new DatePickerDialog.OnDateSetListener() {                           @Override                           public void onDateSet(DatePicker datePicker,                                   int year, int month, int dayOfMonth) {                               EditText editText =                                   (EditText) findViewById(R.id.editText);                                //Calendar月份是从0开始,所以month要加1                               editText.setText("你选择了" + year + "年" +                                       (month+1) + "月" + dayOfMonth + "日");                           }                       };                   dialog = new DatePickerDialog(this,                           dateListener,                           calendar.get(Calendar.YEAR),                           calendar.get(Calendar.MONTH),                           calendar.get(Calendar.DAY_OF_MONTH));                   break;               case TIME_DIALOG:                   TimePickerDialog.OnTimeSetListener timeListener =                       new TimePickerDialog.OnTimeSetListener() {                                @Override                           public void onTimeSet(TimePicker timerPicker,                                   int hourOfDay, int minute) {                               EditText editText =                                   (EditText) findViewById(R.id.editText);                               editText.setText("你选择了" + hourOfDay + "时" +                                        minute + "分");                           }                       };                       dialog = new TimePickerDialog(this, timeListener,                               calendar.get(Calendar.HOUR_OF_DAY),                               calendar.get(Calendar.MINUTE),                               false);   //是否为二十四制                   break;               default:                   break;           }           return dialog;       }

缩放工具：

 @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.main);      //设置标题  setTitle("ZoomControls");  zoomControls = (ZoomControls) findViewById(R.id.zoomcontrols);  text = (TextView) findViewById(R.id.text);  //点击放大按钮事件  zoomControls.setOnZoomInClickListener(new OnClickListener() {   @Override   public void onClick(View v) {    size = size + 2;    text.setTextSize(size);   }  });  //点击缩小的按钮的事件  zoomControls.setOnZoomOutClickListener(new OnClickListener() {   @Override   public void onClick(View v) {    size = size - 2;    text.setTextSize(size);   }  });

抽屉功能：

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="fill_parent" android:layout_height="fill_parent" android:orientation="vertical" android:background="@drawable/default_bg"> <SlidingDrawer android:layout_width="fill_parent"  android:layout_height="fill_parent" android:handle="@+id/handle"  android:content="@+id/content" android:orientation="vertical"  android:id="@+id/slidingdrawer">  <ImageButton android:id="@id/handle" android:layout_width="50dip"   android:layout_height="44dip" android:src="@drawable/up" />  <LinearLayout android:id="@id/content"   android:layout_width="fill_parent" android:layout_height="fill_parent"    android:background="#ffffff">   <TextView android:text="这是一个滑动式抽屉的示例"    android:id="@+id/tv"   android:textSize="18px"   android:textColor="#000000"   android:gravity="center_vertical|center_horizontal"   android:layout_width="match_parent"    android:textStyle="bold"   android:layout_height="match_parent"></TextView>  </LinearLayout> </SlidingDrawer></LinearLayout>

 @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.main);  imbg=(ImageButton)findViewById(R.id.handle);  mDrawer=(SlidingDrawer)findViewById(R.id.slidingdrawer);  tv=(TextView)findViewById(R.id.tv);  /**   * 抽屜打開事件   */  mDrawer.setOnDrawerOpenListener(new SlidingDrawer.OnDrawerOpenListener()  {   @Override   public void onDrawerOpened() {    flag=true;    imbg.setImageResource(R.drawable.down);   }  });  /**   * 抽屜關閉事件   */  mDrawer.setOnDrawerCloseListener(new SlidingDrawer.OnDrawerCloseListener(){   @Override   public void onDrawerClosed() {    flag=false;    imbg.setImageResource(R.drawable.up);   }  });  /**   * 抽屜拖動事件   */  mDrawer.setOnDrawerScrollListener(new SlidingDrawer.OnDrawerScrollListener(){   @Override   public void onScrollEnded() {    tv.setText("结束拖动");   }   @Override   public void onScrollStarted() {   tv.setText("开始拖动");   }     });  }

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