Android：进度对话框在加载时更改 ProgressDialog.setMessage()

我希望有人可以帮助我弄清楚如何仅使用一个虚拟计时器来更改进度对话框中的设置消息对话框，该虚拟计时器通过字符串数组或任何其他方式循环。例如，在加载时，它可以说正在加载... -> 构建... -> 渲染... -> 等。就像一个 1/2 秒计时器（这只是为了我玩它，一旦我弄清楚如何更改对话框，我可以使用实时更新来调整它。）我一直在使用本教程 http://www.eigo.co.uk/Threads-and-Progress-Dialogs-in-Android-Screen-Orientation-Rotations.aspx进度线程减去方向代码。有任何想法吗？

thanks!

它并不漂亮，但我能够让它与此一起工作：

public class BadBaconJoke extends Activity implements OnClickListener {
    ProgressDialog dialog;
    int increment;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.progressdialog);

        Button startbtn = (Button) findViewById(R.id.startbtn);
        startbtn.setOnClickListener(this);
    }

    public void onClick(View view) { 

        // get the increment value from the text box
        EditText et = (EditText) findViewById(R.id.increment);
        // convert the text value to a integer
        increment = Integer.parseInt(et.getText().toString());
        dialog = new ProgressDialog(this);
        dialog.setCancelable(true);
        dialog.setTitle("Loading...");
        dialog.setMessage("Almsot done!");
        // set the progress to be horizontal
        dialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);

        // reset the bar to the default value of 0
        dialog.setProgress(0);

        // get the maximum value
        EditText max = (EditText) findViewById(R.id.maximum);
        // convert the text value to a integer
        final int maximum = Integer.parseInt(max.getText().toString());
        // set the maximum value
        dialog.setMax(maximum);
        // display the progressbar
        dialog.show();


        // create a thread for updating the progress bar
        Thread background = new Thread (new Runnable() {
           public void run() {
               try {


                   // enter the code to be run while displaying the progressbar.
                   //
                   // This example is just going to increment the progress bar:
                   // So keep running until the progress value reaches maximum value
                   while (dialog.getProgress()<= dialog.getMax()) {
                       // wait 500ms between each update
                       Thread.sleep(500);

                       // active the update handler
                       progressHandler.sendMessage(progressHandler.obtainMessage());


                   }
               } catch (java.lang.InterruptedException e) {
                   // if something fails do something smart
               }
           }
        });

        // start the background thread
        background.start();



    }

    // handler for the background updating
    Handler progressHandler = new Handler() {
        public void handleMessage(Message msg) {
            dialog.incrementProgressBy(increment);
            int x;
            x = dialog.getProgress();

            switch (x) {
            case 10:  dialog.setMessage("Gathering Data");      break;
            case 20:  dialog.setMessage("Parsing Results");      break;
            case 30:  dialog.setMessage("Builindg Data");        break;
            case 40:  dialog.setMessage("TeraForming");       break;
            case 50:  dialog.setMessage("Contacting Server");  break;
            case 60:  dialog.setMessage("Ping Back");  break;
            case 70:  dialog.setMessage("Processing");  break;
            case 80:  dialog.setMessage("Communicating with Device");  break;
            case 90:  dialog.setMessage("Populating");  break;
            case 100:  dialog.setMessage("Displaying Data:");  break;
            default: dialog.setMessage("..."); break;
        }

         if (x == 100){
             new AlertDialog.Builder(BadBaconJoke.this);
            dialog.setTitle("Complete");
            //.setMessage("Are you sure you want to exit?")
           // dialog.setButton(android.R.string.no, null);
            //.setMessage("Are you sure you want to exit?")
         }


        }
    };










}

有什么想法如何让它与旋转器和进程对话框一起工作吗？当我更改dialog.setProgress Style(ProgressDialog.STYLE HORIZONTAL);时到dialog.setProgress样式(ProgressDialog.STYLE_SPINNER);

它仅显示 switch case 中的默认值。

您可以使用onProgressUpdated()为了改变消息，因为这个方法是在UI线程上运行的。不过，它并没有让您有机会在特定的时间内更改消息。