Question

package com.em.progressb;

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

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

        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.setMessage("Loading...");
        // 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
        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();

        progressb o1 = new progressb();
        o1.onPause();


 if(dialog.getProgress()==dialog.getMax())
 {    
      Intent i = new Intent(this, ShowMyDialog.class);
         this.startActivity(i);
 }   


    }

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

这是我的第一个活动的代码。它包含进度条，因为进度达到最大限制我想调用第二个活动，并且我也有书面意图调用下一个活动。但它不起作用。请帮助我解决这个问题。

Answer 1

将调用下一个活动的代码移动到处理程序。您创建的bg线程将 parallel 运行到UI线程。

无法调用下一个活动

1 个答案: