如何在Android中显示进度对话框？

Question

当我调用 Web 服务并调用 Web 服务结束对话框自动关闭时，我想在我的活动中显示进度对话框，任何人都可以知道如何执行此操作，我想要一些示例。 提前致谢。

这是我的代码，但它工作不正常，

final ProgressDialog dialog = ProgressDialog.show(
                RouteServicing.this, "", "Loading. Please wait...", true);

        final Handler handler = new Handler() {
            public void handleMessage(Message msg) {
                dialog.dismiss();
            }
        };

        Thread checkUpdate = new Thread() {
            public void run() {

                Status = cn.callWebService(url);
                getDetail(Status);
                //handler.sendEmptyMessage(0);
                dialog.dismiss();
            }
        };
        checkUpdate.start();

它向我显示了这个错误

    02-02 16:06:53.219: E/WindowManager(1127): android.view.WindowLeaked: Activity com.palewar.coinop.RouteServicing has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView@405db660 that was originally added here
02-02 16:06:53.219: E/WindowManager(1127):  at android.view.ViewRoot.<init>(ViewRoot.java:272)
02-02 16:06:53.219: E/WindowManager(1127):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:148)
02-02 16:06:53.219: E/WindowManager(1127):  at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:91)
02-02 16:06:53.219: E/WindowManager(1127):  at android.view.Window$LocalWindowManager.addView(Window.java:424)
02-02 16:06:53.219: E/WindowManager(1127):  at android.app.Dialog.show(Dialog.java:241)
02-02 16:06:53.219: E/WindowManager(1127):  at android.app.ProgressDialog.show(ProgressDialog.java:107)
02-02 16:06:53.219: E/WindowManager(1127):  at android.app.ProgressDialog.show(ProgressDialog.java:90)
02-02 16:06:53.219: E/WindowManager(1127):  at com.palewar.coinop.RouteServicing.onClick(RouteServicing.java:243)

Answer 1

将方法更改为：

Thread checkUpdate = new Thread() {
            public void run() {

                Status = cn.callWebService(url);
                getDetail(Status);
                handler.sendEmptyMessage(0);
            }
        };