对话框 PopupWindow 相关

来源：互联网发布：什么是人工智能编辑：程序博客网时间：2024/06/06 06:33

1.自定义Dialog 弹出

    noCardDialog=new NoCardDialog(context);                              Window noCardDialogWindow=noCardDialog.getWindow();                              WindowManager.LayoutParams lp=noCardDialogWindow.getAttributes();                              noCardDialogWindow.setGravity(Gravity.CENTER);                              lp.width=300;                              noCardDialogWindow.setAttributes(lp);                              noCardDialog.requestWindowFeature(Window.FEATURE_NO_TITLE);                              noCardDialog.show();

    class NoCardDialog extends Dialog {                   private ImageView iv1;             private ImageButton ib1;                   public NoCardDialog(Context context) {                 super(context);                 // TODO Auto-generated constructor stub             }                   @Override             protected void onCreate(Bundle savedInstanceState) {                 super.onCreate(savedInstanceState);                 this.setCancelable(false);// 设置点击屏幕Dialog不消失                 setContentView(R.layout.nobindcard);                 iv1= (ImageView) findViewById(R.id.nobindcard_iv1);                 ib1= (ImageButton) findViewById(R.id.nobindcard_ib1);                       if(mark==1){                     iv1.setImageResource(R.mipmap.nobind_topup);                 }else if(mark==2){                     iv1.setImageResource(R.mipmap.nobind_withdrawal);                 }                   }         }

2.PopupWindow

    public class PopMenuView implements OnItemClickListener {                private Context context;          private PopupWindow popupWindow;          private ListView listView;          private OnPItemClickListener listener;          private LayoutInflater inflater;          private int thisPosition;                private Handler handler = new Handler(Looper.getMainLooper()){                    @Override              public void handleMessage(Message msg) {                  // TODO Auto-generated method stub                  super.handleMessage(msg);                  switch (msg.what) {                  case 0:                      if(listener != null) listener.onItemClick(thisPosition);                      break;                  case 1:                      if(listener != null) listener.onDialogDismiss();                       break;                  default:                      break;                  }              }          };                    public PopMenuView(Context context) {              this.context = context;                    inflater = (LayoutInflater) context                      .getSystemService(Context.LAYOUT_INFLATER_SERVICE);              View view = (View) inflater.inflate(R.layout.searchpopmenu, null);                    listView = (ListView) view.findViewById(R.id.searchpopmenu_listView);              listView.setAdapter(new PopMenuAdapter(context));              listView.setOnItemClickListener(this);                    popupWindow = new PopupWindow(view, context.getResources()                      .getDimensionPixelSize(R.dimen.popmenu_width),                      LayoutParams.WRAP_CONTENT);              popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));              popupWindow.setOnDismissListener(new OnDismissListener() {                        @Override                  public void onDismiss() {                      // TODO Auto-generated method stub                      handler.sendEmptyMessage(1);                  }              });          };                @Override          public void onItemClick(AdapterView<?> parent, View view, int position,                  long id) {              thisPosition = position;              handler.sendEmptyMessage(0);              dismiss();          }                public void setOnItemClickListener(OnPItemClickListener listener) {              this.listener = listener;          }                public void showAsDropDown(View parent) {                    popupWindow.showAsDropDown(parent, -10, context.getResources()                      .getDimensionPixelSize(R.dimen.popmenu_yoff));              popupWindow.setFocusable(true);              popupWindow.setOutsideTouchable(true);              popupWindow.update();          }                public void dismiss() {              if (popupWindow.isShowing())                  popupWindow.dismiss();          }                public interface OnPItemClickListener {              public void onItemClick(int index);                    public void onDialogDismiss();          }      }

3.设置背景为透明的方法

把PopWindow自定义的layout背景色设置为透明的颜色  <solid android:color="#80000000"/>  前两位为透明度

4.7种形式的Android Dialog使用举例

http://www.oschina.net/question/54100_32486

5.Service中弹出Dialog对话框，即全局性对话框

先说具体做法，原因在其后给出：写好Alter功能块后，在alter.show()语句前加入：alert.getWindow().setType(WindowManager.LayoutParams.TYPE_SYSTEM_ALERT); 注：alter为AlertDialog类型对象然后在AndroidManifest.xml中加入权限：<uses-permission android:name="android.permission.SYSTEM_ALERT_WINDOW"></uses-permission>  下面进行简单的解释：如果只在Service中写入常在Activity中使用的创建Alter的代码，运行时是会发生错误的，因为Alter的显示需要依附于一个确定的Activity类。而以上做法就是声明我们要弹出的这个提示框是一个系统的提示框，即全局性质的提示框，所以只要手机处于开机状态，无论它现在处于何种界面之下，只要调用alter.show()，就会弹出提示框来

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