一个Demo让你掌握所有的android控件

「爱情、让人受尽委屈。」 2022-03-18 12:11 187阅读 0赞

**注：这个例子来自“安卓巴士”，仅在此学习，阅读**

**下面给出实现各个组件的源代码**：

1.下拉框实现--Spinner

package com.cellcom;import java.util.ArrayList;import java.util.List;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.AdapterView;import android.widget.ArrayAdapter;import android.widget.Button;import android.widget.Spinner;//下拉框public class SpinnerActivity extends Activity { private Spinner spinner1; private Spinner spinner2; private Button ok; private ArrayAdapter countiesAdapter; private String[] mCounties={
        "beijing","guangdong","guangxi","hunan"}; private List<String> allCounties=new ArrayList<String>(); private String result="你选择的是：";   @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.spinner);    spinner1=(Spinner)findViewById(R.id.spinner1);  spinner2=(Spinner)findViewById(R.id.spinner2);  ok=(Button)findViewById(R.id.ok);    for(int i=0;i<mCounties.length;i++){   allCounties.add(mCounties[i]);  }    countiesAdapter=new ArrayAdapter<String>(SpinnerActivity.this,android.R.layout.simple_spinner_item,allCounties);  countiesAdapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  spinner1.setAdapter(countiesAdapter);    ArrayAdapter adapter=ArrayAdapter.createFromResource(SpinnerActivity.this,R.array.counties,android.R.layout.simple_spinner_item);  adapter.setDropDownViewResource(android.R.layout.simple_spinner_dropdown_item);  spinner2.setAdapter(adapter);    //单击第一个下拉按钮时，显示选择的值。   spinner1.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {   @Override   public void onItemSelected(AdapterView<?> adapter, View view,     int position, long id) {    // TODO Auto-generated method stub    String str=(String)spinner1.getAdapter().getItem((int)id);    setTitle(result+str);   }   @Override   public void onNothingSelected(AdapterView<?> arg0) {    // TODO Auto-generated method stub       }  });    //单击第二个下拉按钮时，显示选择的值。   spinner2.setOnItemSelectedListener(new AdapterView.OnItemSelectedListener() {   @Override   public void onItemSelected(AdapterView<?> adapter, View view,     int position, long id) {    String str=(String)spinner2.getAdapter().getItem(position);    setTitle(result+str);   }   @Override   public void onNothingSelected(AdapterView<?> arg0) {   }  });        //单击确定按钮，提取选择的值.  ok.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    setTitle(result+spinner1.getSelectedItem()+"  - >>  "+spinner2.getSelectedItem());   }  });   }}

2.对话框的实现--AlertDialog

package com.cellcom;import android.app.Activity;import android.app.AlertDialog;import android.app.AlertDialog.Builder;import android.app.ProgressDialog;import android.content.DialogInterface;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.Toast;//对话框测试public class AlertDialogActivity extends Activity { private Button button1; private Button button2; private Button button3; private Button button4;  @Override protected void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setContentView(R.layout.alert_dialog);  setTitle("4种对话框！");    button1=(Button)findViewById(R.id.button1);  button2=(Button)findViewById(R.id.button2);  button3=(Button)findViewById(R.id.button3);  button4=(Button)findViewById(R.id.button4);    //第一种对话框  button1.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    Builder builder=new AlertDialog.Builder(AlertDialogActivity.this);    builder.setIcon(R.drawable.alert_dialog_icon);    builder.setTitle("哇哈哈！");    builder.setMessage("去不去？");    builder.setPositiveButton("确定", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "你选择了确定按钮！", Toast.LENGTH_SHORT).show();     }    });    builder.setNegativeButton("取消", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "你选择了取消按钮！", Toast.LENGTH_SHORT).show();     }    });    builder.show();   }  });    //第二种对话框  button2.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    new AlertDialog.Builder(AlertDialogActivity.this)    .setIcon(R.drawable.alert_dialog_icon)    .setTitle("温馨提示")    .setMessage("提示内容：三个按钮")    .setPositiveButton("确定", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "你选择了确定按钮！", Toast.LENGTH_SHORT).show();     }    })    .setNeutralButton("详情", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "你选择了详情按钮！", Toast.LENGTH_SHORT).show();     }    })    .setNegativeButton("取消", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "你选择了取消按钮！", Toast.LENGTH_SHORT).show();     }    })    .show();   }  });    //第三种按钮  button3.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    LayoutInflater inflater=LayoutInflater.from(AlertDialogActivity.this);    final View textEntryView=inflater.inflate(R.layout.alert_dialog_text_entry, null);        final EditText usernameET=(EditText)textEntryView.findViewById(R.id.username_value);    final EditText passwordET=(EditText)textEntryView.findViewById(R.id.password_value);    //final String username=usernameET.getText().toString();        new AlertDialog.Builder(AlertDialogActivity.this)    .setIcon(R.drawable.alert_dialog_icon)    .setTitle("温馨提醒")    .setView(textEntryView)    .setPositiveButton("确定", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "用户名="+usernameET.getText().toString()+"\n密码="+passwordET.getText().toString(), Toast.LENGTH_LONG).show();     }    })    .setNegativeButton("取消", new DialogInterface.OnClickListener() {     @Override     public void onClick(DialogInterface dialog, int which) {      Toast.makeText(AlertDialogActivity.this, "你选择了确定取消！", Toast.LENGTH_SHORT).show();     }    })    .show();   }  });    //第四种对话框  button4.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    ProgressDialog dialog=new ProgressDialog(AlertDialogActivity.this);    dialog.setTitle("处理中。。。");    dialog.setMessage("请稍后。。。");    dialog.show();   }  }); }}

3.自动提示框的实现--AutoCompleteTextView

package com.cellcom;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.ArrayAdapter;import android.widget.AutoCompleteTextView;import android.widget.Button;//自动提示框public class AutoCompleteTextViewActivity extends Activity { private AutoCompleteTextView autoComplete; private Button cleanButton; static final String[] COUNTRIES = new String[] {  "China" ,"Russia", "Germany",  "Ukraine", "Belarus", "USA" ,"China1" ,"China12", "Germany",  "Russia2", "Belarus", "USA" ,"UAA","UBC","UBB","CCC","BBB","广州1","广州2","广州3","广州4","广东1","广东2","广东3",     };  @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.auto_complete_text_view);  setTitle("AutoCompleteTextView示例！");  autoComplete=(AutoCompleteTextView)findViewById(R.id.auto_complete);  cleanButton=(Button)findViewById(R.id.cleanButton);    ArrayAdapter<String> adapter=new ArrayAdapter<String>(AutoCompleteTextViewActivity.this,android.R.layout.simple_dropdown_item_1line,COUNTRIES);  autoComplete.setAdapter(adapter);    //清空  cleanButton.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    autoComplete.setText("");   }  }); } }

4.Activity之间传递数据--Bundle

package com.cellcom;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.EditText;import android.widget.RadioButton;/** * @author nwang *  * 输入身高和选择性别，计算标准体重。并把数据返回到原来Activity */public class Bundle1Activity extends Activity { private int my_requestCode=1550; private RadioButton sexMan; private RadioButton sexWoman; private EditText heightEdit; private Button okButton;  @Override protected void onCreate(Bundle savedInstanceState) {    super.onCreate(savedInstanceState);  setContentView(R.layout.bundle1);    sexMan=(RadioButton)findViewById(R.id.sex_man);  sexWoman=(RadioButton)findViewById(R.id.sex_woman);  heightEdit=(EditText)findViewById(R.id.height_edit);  okButton=(Button)findViewById(R.id.button_ok);    okButton.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    double height=Double.parseDouble(heightEdit.getText().toString());    String sex="";    if(sexMan.isChecked()){     sex="M";    }else{     sex="F";    }        Intent intent=new Intent();    intent.setClass(Bundle1Activity.this, Bundle2Activity.class);    //封装数据    Bundle bundle=new Bundle();    bundle.putDouble("height", height);    bundle.putString("sex", sex);    intent.putExtras(bundle);    startActivityForResult(intent, my_requestCode);   }  }); }  //回调方法 @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) {  super.onActivityResult(requestCode, resultCode, data);    switch (requestCode) {  case RESULT_OK:   //RESULT_OK表示返回成功，提取数据。   Bundle bundle=data.getExtras();   String sex=bundle.getString("sex");   double height=bundle.getDouble("height");   heightEdit.setText(String.valueOf(height));   if(sex.equals("M")){    sexMan.setChecked(true);   }else{    sexWoman.setChecked(true);   }   break;  default:   break;  } } }

package com.cellcom;import java.text.DecimalFormat;import java.text.NumberFormat;import android.app.Activity;import android.content.Intent;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.TextView;public class Bundle2Activity extends Activity{ private TextView result; private Button backButton; Intent intent=null; @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.bundle2);  result=(TextView)findViewById(R.id.result);  backButton=(Button)findViewById(R.id.button_back);    intent=this.getIntent();  Bundle bundle=intent.getExtras();  double height=bundle.getDouble("height");  String sex=bundle.getString("sex");  String sexStr="";  if("M".equals(sex)){   sexStr="男性";  }else{   sexStr="女性";  }  String weight=this.getWeight(sex, height);  result.setText("你是一位："+sexStr+"\n身高是："+height+"厘米 \n你的标准体重："+weight+"公斤");    //返回上一页  backButton.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    Bundle2Activity.this.setResult(RESULT_OK, intent);     Bundle2Activity.this.finish();   }  }); }  public String getWeight(String sex,double height){  String weight="";  if("M".endsWith(sex)){   weight=format((height-80)*0.7);  }else{   weight=format((height-70)*0.6);  }  return weight; }  public String format(double num){  NumberFormat formatter=new DecimalFormat("0.00");  String s=formatter.format(num);  return s; }}

5. [复选框][Link 1]\--CheckBox

package com.cellcom;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.CheckBox;public class CheckBoxActivity extends Activity { private CheckBox plainCB; private CheckBox serifCB; private CheckBox boldCB; private CheckBox italicCB; private Button button1; @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.check_box);    plainCB=(CheckBox)findViewById(R.id.plain_cb);  serifCB=(CheckBox)findViewById(R.id.serif_cb);  boldCB=(CheckBox)findViewById(R.id.bold_cb);  italicCB=(CheckBox)findViewById(R.id.italic_cb);  button1=(Button)findViewById(R.id.button1);    button1.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    String result="";    if(plainCB.isChecked()){     result+=plainCB.getText()+"、";    }    if(serifCB.isChecked()){     result+=serifCB.getText()+"、";    }    if(boldCB.isChecked()){     result+=boldCB.getText()+"、";    }    if(italicCB.isChecked()){     result+=italicCB.getText()+"、";    }    if(!"".equals(result)){     result=result.substring(0,result.length()-1);    }else{     result="你没有选择！！！";    }    setTitle("Checked:"+result);   }  });   }}

6.菜单的实现--Menu

package com.cellcom;import android.app.Activity;import android.graphics.Color;import android.os.Bundle;import android.view.ContextMenu;import android.view.Menu;import android.view.MenuItem;import android.view.View;import android.view.ContextMenu.ContextMenuInfo;import android.widget.TextView;public class ContextMenuActivity extends Activity { private final static int ITEM0=Menu.FIRST; private final static int ITEM1=Menu.FIRST+1; private final static int ITEM2=Menu.FIRST+2; private TextView tv;  @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.context_menu);  setTitle("单击Menu键看到效果！");  tv=(TextView)findViewById(R.id.tv1);    this.registerForContextMenu(tv);//将上下文注册到TextView }  @Override public void onCreateContextMenu(ContextMenu menu, View v,   ContextMenuInfo menuInfo) {  menu.add(0, ITEM0, 0, "红色背景");  menu.add(0,ITEM1,0,"绿色背景");  menu.add(0,ITEM2,0,"白色背景");   }  @Override public boolean onContextItemSelected(MenuItem item) {  switch (item.getItemId()) {  case ITEM0:   tv.setTextColor(Color.RED);   break;  case ITEM1:   tv.setTextColor(Color.GREEN);   break;  case ITEM2:   tv.setTextColor(Color.WHITE);   break;  default:   break;  }  return true; } }

7.日期选择器--DataTimePicker

package com.cellcom;import java.text.SimpleDateFormat;import java.util.Date;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.DatePicker;import android.widget.TimePicker;//DatePicker日期选择器、TimePicker时间选择器 使用public class DatePickerActivity extends Activity { private Button datePickerButton; private DatePicker datePicker1; private TimePicker timePicker1;  //默认生成系统当前时间 SimpleDateFormat sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm");   String str=sdf.format(new Date()); int year=Integer.parseInt(str.substring(0, 4)); int month=Integer.parseInt(str.substring(5,7))-1; int day=Integer.parseInt(str.substring(8,10)); int hour=Integer.parseInt(str.substring(11,13)); int minute=Integer.parseInt(str.substring(14,16));  @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.date_picker);  setTitle("DatePicker、TimePicker示例!");    datePicker1=(DatePicker)findViewById(R.id.datePicker1);  timePicker1=(TimePicker)findViewById(R.id.timePicker1);  datePickerButton=(Button)findViewById(R.id.datePickerButton1);  datePicker1.init(year,month,day, null);    timePicker1.setCurrentHour(hour);  timePicker1.setCurrentMinute(minute);    timePicker1.setIs24HourView(true);    datePickerButton.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    setTitle("你选择的是："+datePicker1.getYear()+"年"+datePicker1.getMonth()+"月"+datePicker1.getDayOfMonth()+"日 "+timePicker1.getCurrentHour()+"小时"+timePicker1.getCurrentMinute()+"分");   }  }); }}

8.网格视图控件--GridView

package com.cellcom;import android.app.Activity;import android.content.Context;import android.os.Bundle;import android.view.View;import android.view.ViewGroup;import android.widget.BaseAdapter;import android.widget.GridView;import android.widget.ImageView;//网络视图控件public class GridViewActivity extends Activity { @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.grid_view);  setTitle("网络视图控件GridView！");    GridView gridView=(GridView)findViewById(R.id.grid_view);  gridView.setAdapter(new ImageAdapter(this));   }  public class ImageAdapter extends BaseAdapter{  private Context mContext;  public ImageAdapter(Context context){   mContext=context;  }  @Override  public int getCount() {   // TODO Auto-generated method stub   return mImageIds.length;  }  @Override  public Object getItem(int position) {   // TODO Auto-generated method stub   return null;  }  @Override  public long getItemId(int position) {   // TODO Auto-generated method stub   return 0;  }  @Override  public View getView(int position, View convertView, ViewGroup parent) {   ImageView imageView;   if(convertView==null){    imageView=new ImageView(mContext);    imageView.setLayoutParams(new GridView.LayoutParams(85,85));    imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);    imageView.setPadding(8, 8, 8, 8);   }else{    imageView=(ImageView)convertView;   }   imageView.setImageResource(mImageIds[position]);   return imageView;  }   }    private Integer[] mImageIds = {            R.drawable.sample_0, R.drawable.sample_1, R.drawable.sample_2,            R.drawable.sample_3, R.drawable.sample_4, R.drawable.sample_5,            R.drawable.sample_6, R.drawable.sample_7,R.drawable.sample_8,            R.drawable.sample_9,R.drawable.sample_10,R.drawable.sample_11};}

9.进度条控件--ProgressBar

package com.cellcom;import android.app.Activity;import android.os.Bundle;import android.os.Handler;import android.view.View;import android.widget.Button;import android.widget.ProgressBar;import android.widget.TextView;/** *  * @author nwang *  * 进度条ProgressBar与线程使用。单击开始按钮，进度条水平方向前进！ * */public class ProgressBarHandlerActivity extends Activity {    /** Called when the activity is first created. */  private Button startButton; private Button stopButton; private TextView result; private ProgressBar firstProgressBar; private final static int defaultValue=10; private int i=0;      @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.progress_bar);        setTitle("ProgressBar使用！");        startButton=(Button)findViewById(R.id.startButton);        stopButton=(Button)findViewById(R.id.stopButton);        result=(TextView)findViewById(R.id.result);        firstProgressBar=(ProgressBar)findViewById(R.id.firstProgressBar);                firstProgressBar.setVisibility(0);//刚开始设置进度条可见                startButton.setOnClickListener(new View.OnClickListener() {      @Override   public void onClick(View v) {    /*i+=defaultValue;    firstProgressBar.setProgress(i);    firstProgressBar.setSecondaryProgress(i+defaultValue);*/    result.setText(((double)i/firstProgressBar.getMax()*100)+"%");    handler.post(progressBarThread);   }  });                stopButton.setOnClickListener(new View.OnClickListener() {      @Override   public void onClick(View v) {    handler.removeCallbacks(progressBarThread);      }  });    }        //创建Handler对象    Handler handler=new Handler();        //创建线程对象    MyRunnable progressBarThread=new MyRunnable();    class MyRunnable implements Runnable{  @Override  public void run() {   i+=defaultValue;   handler.postDelayed(progressBarThread, 1000);   firstProgressBar.setProgress(i);   firstProgressBar.setSecondaryProgress(i+defaultValue);   result.setText(((double)i/firstProgressBar.getMax()*100)+"%");   if(i>=firstProgressBar.getMax()) i=0;     }         }    }

10.单选控件--RadioGroup

package com.cellcom;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.Button;import android.widget.RadioButton;//单选控件public class RadioGroupActivity extends Activity { private RadioButton radioFemale; private RadioButton radioMale; private Button ok;  @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);    setContentView(R.layout.radio_group);    radioFemale=(RadioButton)findViewById(R.id.radioFemale);  radioMale=(RadioButton)findViewById(R.id.radioMale);  ok=(Button)findViewById(R.id.ok);    ok.setOnClickListener(new View.OnClickListener() {   @Override   public void onClick(View v) {    String result="你选择的是：";    if(radioFemale.isChecked()){     setTitle(result+"女");    }else{     setTitle(result+"男");    }   }  }); }}

11.打分组件--RatingBar

package com.cellcom;import android.app.Activity;import android.os.Bundle;import android.view.View;import android.widget.ImageButton;import android.widget.RatingBar;import android.widget.Toast;//评分组件RatingBar、ImageView图片、 ImageButton图片按钮public class RatingBarActivity extends Activity { private RatingBar ratingBar; private ImageButton imageButton;  @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.rating_bar);  setTitle("评分组件RatingBar、ImageView图片、 ImageButton图片按钮");  ratingBar=(RatingBar)findViewById(R.id.rating_bar);  imageButton=(ImageButton)findViewById(R.id.imageButton);    imageButton.setOnClickListener(new View.OnClickListener() {      @Override   public void onClick(View v) {    Toast.makeText(RatingBarActivity.this, "单击图片按钮!!", Toast.LENGTH_LONG).show();   }  }); }}

12.标签控件--Tab

package com.cellcom;import android.app.TabActivity;import android.os.Bundle;import android.view.LayoutInflater;import android.widget.TabHost;//标签控件Tabpublic class TabDemoActivity extends TabActivity {  public void onCreate(Bundle savedInstanceState) {  super.onCreate(savedInstanceState);  setTitle("标签控件Tab");  TabHost tabHost=getTabHost();  LayoutInflater.from(this).inflate(R.layout.tab, tabHost.getTabContentView(),true);  tabHost.addTab(tabHost.newTabSpec("biaoqian1").setIndicator("标签tab1").setContent(R.id.tab1));  tabHost.addTab(tabHost.newTabSpec("biaoqian2").setIndicator("标签tab2").setContent(R.id.tab2));  tabHost.addTab(tabHost.newTabSpec("biaoqian3").setIndicator("标签tab3").setContent(R.id.tab3)); } }

13.子菜单的实现--SubMenu

package com.cellcom;import android.app.Activity;import android.os.Bundle;import android.view.Menu;import android.view.MenuItem;import android.view.SubMenu;//子菜单subMenupublic class SubMenuActivity extends Activity { private final static int ITEM_NEW_FILE=Menu.FIRST; private final static int ITEM_OPEN_FILE=Menu.FIRST+1; private final static int ITEM_COPY=Menu.FIRST+2; private final static int ITEM_CLOSE=Menu.FIRST+3; private final static int ITEM_SAVE=Menu.FIRST+4; private final static int ITEM_SAVE_ALL=Menu.FIRST+5; private final static int ITEM_CUT=Menu.FIRST+6; private final static int ITEM_PASTE=Menu.FIRST+7;  @Override protected void onCreate(Bundle savedInstanceState) {  // TODO Auto-generated method stub  super.onCreate(savedInstanceState);  setContentView(R.layout.sub_menu);  setTitle("单击Menu键看到效果！"); }  @Override public boolean onCreateOptionsMenu(Menu menu) {  SubMenu file=menu.addSubMenu("文件");  SubMenu edit=menu.addSubMenu("编辑");    file.add(0,ITEM_NEW_FILE,0,"新建");  file.add(0,ITEM_OPEN_FILE,0,"打开");  file.add(0,ITEM_CLOSE,0,"关闭");  file.add(0,ITEM_SAVE,0,"保存");  file.add(0,ITEM_SAVE_ALL,0,"保存全部");      edit.add(0,ITEM_COPY,0,"复制");  edit.add(0,ITEM_CUT,0,"剪切");  edit.add(0,ITEM_PASTE,0,"粘贴");    return true; }  @Override public boolean onOptionsItemSelected(MenuItem item) {  switch (item.getItemId()) {  case ITEM_NEW_FILE:   setTitle("新建文件！");   break;  case ITEM_OPEN_FILE:   setTitle("打开文件");   break;  case ITEM_COPY:   setTitle("复制文件");   break;  default:   break;  }  return true; }}

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**[http://download.csdn.net/detail/dlutbrucezhang/5061337][http_download.csdn.net_detail_dlutbrucezhang_5061337]**

再分享一下我老师大神的人工智能教程吧。零基础！通俗易懂！风趣幽默！还带黄段子！希望你也加入到我们人工智能的队伍中来！[https://blog.csdn.net/jiangjunshow][https_blog.csdn.net_jiangjunshow]

[Link 1]: https://www.baidu.com/s?wd=%E5%A4%8D%E9%80%89%E6%A1%86&tn=24004469_oem_dg&rsv_dl=gh_pl_sl_csd
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