Android开发点滴

Android开发点滴:

1)固定屏幕纵向<activity android:name=".C6UsersActivity" android:label="@string/app_name" android:screenOrientation="portrait"></activity>  landscape为横向

2)网络访问权限<uses-permission android:name="android.permission.INTERNET" />

3)本地读写权限<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>

4)多线程执行

new Thread(){    public void run(){    Log.d("ApplicationSet","Reflesh UserList begin...");                     Log.d("ApplicationSet","Reflesh UserList End...");        }        }.start();

 5)ListAcitvity示例

package C6M.Package;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import C6M.Application.C6MApplication;import C6M.ConfigOper.ConfigOper;import C6M.Organization.Dept;import C6M.Organization.Organization;import C6M.Organization.User;import C6M.ServicesOper.SHA1;import C6M.ServicesOper.ServicesOper;import android.R.color;import android.app.Activity;import android.app.ListActivity;import android.content.Intent;import android.os.Bundle;import android.util.Log;import android.view.Gravity;import android.view.View;import android.view.View.OnClickListener;import android.view.WindowManager.LayoutParams;import android.widget.Button;import android.widget.EditText;import android.widget.LinearLayout;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.TextView;import android.widget.Toast;public class C6UsersActivity extends ListActivity {public String serviceurl="******";public Organization organization=null;public String userlist="";public Thread userthread=null;@Override    public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.users);        Button btnSearch=(Button)findViewById(R.id.btnSearch);        btnSearch.setOnClickListener(btnClickListener);        //getUsers();}protected void onListItemClick(ListView l, View v, int position, long id) {    // TODO Auto-generated method stub    super.onListItemClick(l, v, position, id);  try{    System.out.println("id--------------" + v.getId());            System.out.println("position--------------" + position);            ListView listView = (ListView)l;          HashMap<String, String> map = (HashMap<String, String>) listView.getItemAtPosition(position);          String _userid = map.get("txtUserId");      //String _userid=((TextView)l.getChildAt(position).findViewById(R.id.txtUserId)).getText().toString();    Intent intent = new Intent(C6UsersActivity.this,CallSendActivity.class);              intent.putExtra("UserId",_userid);              startActivity(intent);}catch(Exception e){Log.d("Application", "Start CallSend Error "+e.getMessage());}}    //按钮点击监听操作    public OnClickListener btnClickListener=new OnClickListener()    {    @Overridepublic void onClick(View v) {    Log.d("ApplicationKey","Begin");      int id=v.getId();      String _Key="" ;      EditText editkey=(EditText)findViewById(R.id.txtKey);      _Key=editkey.getText().toString();      Log.d("ApplicationKey",_Key);      switch(id)      {         case R.id.btnSearch:         CreatUserList(_Key);         break;      }    }    };    //获取用户列表    public Organization GetOrganization()    {    Organization _ret=new Organization();    String _classarray=",DeptList,ChildUsers,";        _ret=(Organization)ServicesOper.GetObjectInfo(new File("sdcard/C6M/UserList.dat"),"C6M.Organization",_classarray);    return _ret;    }    //创建用户列表    public void CreatUserList(String _Key)    {    if(C6MApplication.organization==null)    {     return;    }    int count=0;    //_Key=_Key+"李";    Organization _org=C6MApplication.organization;        ArrayList<HashMap<String, String>> list = new ArrayList<HashMap<String,String>>();    for(int i=0;i<_org.DeptList.size();i++)    {    Dept _dept=(Dept)_org.DeptList.get(i);    for(int j=0;j<_dept.ChildUsers.size();j++)    {    //Log.d("CreatTree", "UserBegin "+String.valueOf(_Key.length()));    User _user=(User)_dept.ChildUsers.get(j);    //if(_Key.length()>0)    if(_Key!=null &&!_Key.equals("")&&_user.UserName.lastIndexOf(_Key)<0)      continue;            HashMap<String, String> map1 = new HashMap<String, String>();            map1.put("txtUserName", _user.UserName);            map1.put("txtUserId", _user.UserId);            list.add(map1);            count++;            Log.d("CreatTree", "UserEnd");       // if(count>20) break;    }    //if(count>20) break;    }    Log.d("Application",String.valueOf(list.size()));            //生成一个SimpleAdapter类型的变量来填充数据        SimpleAdapter listAdapter = new SimpleAdapter(this, list, R.layout.user, new String[]{"txtUserName" , "txtUserId"}, new int[]{R.id.txtUserName , R.id.txtUserId});        setListAdapter(listAdapter);    }}

 自定义弹出窗口实现

    @Override    public boolean onPrepareOptionsMenu(Menu menu)    {    showTopWindow();    return true;    } public void showTopWindow(){ if(Setalert==null) {     LayoutInflater flater = LayoutInflater.from(this);         view = flater.inflate(R.layout.menu, null);      Log.d("T","show beg");         AlertDialog.Builder builder = new AlertDialog.Builder(C6UnReadMsg.this);         builder.setView(view);        Setalert = builder.create();              Setalert.show();         //((TextView)(view.findViewById(R.id.txtAddress))).setText(C6MApplication.ServiceUrl);         ImageButton btnSet=(ImageButton)view.findViewById(R.id.btnUserList);         btnSet.setOnClickListener(btnClickListener);        Log.d("T","show end"); }else { Setalert.show(); } }