源代碼

public class MenuWindow extends PopupWindow {

private View contentView = null;

public MenuWindow(final Activity context) {

LayoutInflater inflater = (LayoutInflater) context

.getSystemService(context.LAYOUT_INFLATER_SERVICE);

contentView = inflater.inflate(R.layout.menu_window, null);

// 設置selectpopwindow的view

this.setContentView(contentView);

// 設置selectpopwindow彈出窗體的高

this.setHeight(LayoutParams.WRAP_CONTENT);

// 設置selectpopwindow彈出窗體的寬

this.setWidth(140);

// 設置selectpopwindow彈出窗體可點擊

this.setFocusable(true);

this.setOutsideTouchable(true);

// 刷新狀態

this.update();

// 實例化一個colordrawable對象，設置顏色半透明

ColorDrawable drawable = new ColorDrawable(0000000000);

// 點back鍵 和其他地方使其消失，設置這個才能觸發ondismisslistener,設置其他控件變化等操作

this.setBackgroundDrawable(drawable);

LinearLayout take = (LinearLayout) contentView

.findViewById(R.id.takelayout);

take.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

MenuWindow.this.dismiss();

}

});

LinearLayout pic = (LinearLayout) contentView

.findViewById(R.id.piclayout);

pic.setOnClickListener(new OnClickListener() {

@Override

public void onClick(View arg0) {

MenuWindow.this.dismiss();

}

});

}

public void ShowMenuWindow(View parent) {

if (!this.isShowing()) {

this.showAsDropDown(parent, 5, 5);

} else {

this.dismiss();

}

}

跳轉代碼

public class RegisterActivity extends Activity {

private Button btnUpload;

@Override

protected void onCreate(Bundle savedInstanceState) {

// TODO Auto-generated method stub

super.onCreate(savedInstanceState);

setContentView(R.layout.relayout);

initControl();

btnUpload.setOnClickListener(new OnClickListener() {

public void onClick(View arg0) {

MenuWindow menu = new MenuWindow(null);

menu.ShowMenuWindow(arg0);

}

});

}

private void initControl() {

btnUpload = (Button) findViewById(R.id.btnUploadpic);

}

}

代碼沒有顯示出錯，就是運行時一點擊就退出，不知道哪里的問題，哪位救救我啊