java - 无法让 ProgressDialog 显示在 android 中

Question

我无法在需要时显示进度对话框。我尝试将它放入我的 asyncTask ui 类以及在 ui 上运行的它自己的线程中，但没有一个起作用。谁能帮我吗？

调用progressDialog方法的方法:

 public void shareTest(View view){       //method called to jump to share activity if criteria matched

        if(checkInputs()) {                 //call to check inputs
            Share start = new Share();
            boolean isConnected=start.connectToServer();    //connectToServer
            Intent intent = new Intent(HomeScreen.this, Share.class); //create intent to move to share class from this activity

            startProgressDialog();
            if (isConnected) {                      //check to see if isconnected was succesful
                if (Share.matchFound ){             //check to see if a match was found
                    progress.dismiss();
                    startActivity(intent);          //if true jump to share activity
                } else {
                    while (!Share.timedOut) {       //While the time has not timedOut
                        if (Share.matchFound) {     //if a share has been found

                            startActivity(intent);  //start share activity
                            break;                  //if true then break
                        }
                    }
                    if (Share.timedOut) {
                        //send an notice that a match wasn't found
                        sendToast(getString(R.string.noShare));                  //if not true then send Toast
                    }
                }
            }
            else sendToast(getString(R.string.errServCon));                       //if connection to server failed then send toast
        }

    }

方法是这样的:

无效startProgressDialog() {

    new Thread(new Runnable() {
        @Override

        public void run() {     //creates a new runnable thread
            // Issue command() on a separate thread
            while (!Share.matchFound) {       //while havent been asked to disconnect  //if a new location has been recieved
                    activity.runOnUiThread(new Runnable() {
                        @Override
                        public void run() {     //run on the ui thread act
                            progress.show();        //call the method that does the update
                        }
                    });

            }
            progress.dismiss();
        }
    }).start();
}

Answer 1

声明一个全局变量，如下所示:

ProgressDialog progress;

无论您想在哪里显示进度，请粘贴以下代码:

progress = ProgressDialog.show(this, "Please wait",
                "Loading..", true);

完成后，只需将其关闭即可:

progress.dismiss();