得到错误在我的动态切换应用程序我的、应用程序、错误、动态

2023-09-12 05:55:18 作者：搬砖小土妞

您好，我试图解决我的应用程序，具有一个进度条，以及一个按钮，切换到新的活动。可能有人请帮我找出我的错误，给我一个解决问题的办法？我很新的机器人编程！

Hello I am trying to fix my app that features a progress bar as well as a button that switches to a new activity. Could someone please help me isolate my errors and give me a solution to the problem? I am very new at android programming!

下面是我的主要活动。我已经加粗的地方我收到错误。在这里，我得到一个错误说活动1必须在它自己的文件中定义的

Here is my main activity. I have bolded where I am receiving errors. Here I get an error saying "Activity 1 Must be defined in its own file"

package com.example.progressdialog;

import android.app.Activity;
import android.app.ProgressDialog;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;


public class MainActivity extends Activity {


   public class mainactivity2 {

    }
private ProgressDialog progress;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.main);
      progress = new ProgressDialog(this);
   }


   public void open(View view){
      progress.setMessage("Progressing Along!");
      progress.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
      progress.setIndeterminate(false);
      progress.show();

   final int totalProgressTime = 100;

   final Thread t = new Thread(){

   @Override
   public void run(){

      int jumpTime = 0;
      while(jumpTime < totalProgressTime){
         try {
            sleep(500);
            jumpTime += 1;
            progress.setProgress(jumpTime);
         } catch (InterruptedException e) {


           e.printStackTrace();
         }

      }

   }
   };
   t.start();

   }
   @Override
   public boolean onCreateOptionsMenu(Menu menu) {

      getMenuInflater().inflate(R.menu.main, menu);
      return true;
   }
}

public class **Activity1** extends Activity {
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main2);

        Button next = (Button) findViewById(R.id.button2);
        next.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Intent myIntent = new Intent(view.getContext(), Activity2.class);
                startActivityForResult(myIntent, 0);
            }

        });
    }
}

下面是我的第二个活动的文件。我再次加粗我在哪里有错误。这人说我缺少一个支架来完成方法体，但我似乎无法搞清楚在哪里把它。

Here is my second activity file. I once again bolded where I am having errors. This one says I am missing a bracket to complete method body, but I cannot seem to figure out where to put it.

package com.example.progressdialog;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class Activity2 extends Activity **{**

    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main2);

        Button next = (Button) findViewById(R.id.button1);
        next.setOnClickListener(new View.OnClickListener() {
            public void onClick(View view) {
                Intent intent = new Intent();
                setResult(RESULT_OK, intent);
                finish();
            }

        })**;**

感谢您！我只需要弄清楚如何纠正这些错误，因为我以前接到过几次，如果你能解释为什么错误发生，这将有助于我也。

Thank you! I just need to figure out how to correct these errors because I have gotten them a few times before, if you could explain why the errors are occurring that would help me also.

得到错误在我的动态切换应用程序我的、应用程序、错误、动态

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