鉴于放气膨胀和另一 [英] deflate view and inflate another

问题描述

在我的下一步按钮的preSS我必须通过一个字符串数组语音泡运行。在所有的项目完成，并显示在用户点击下一步按钮一次，我想紧缩当前子视图和膨胀的新观点。现在它崩溃的字符串数组完成显示下一步按钮，多个clickings后。
我怎样才能得到这个工作？

 包com.jibushi;    进口android.app.Activity;
    进口android.content.res.Resources;
    进口android.os.Bundle;
    进口android.os.Handler;
    进口android.os.Message;
    进口android.view.LayoutInflater;
    进口android.view.View;
    进口android.view.ViewGroup;
    进口android.widget.Button;
    进口android.widget.TextView;    公共类LessonsShell延伸活动{
    私有静态最终诠释MESSAGE_SHOW_POPUP = 1;
    私有静态最终诠释MESSAGE_SHOW_POPUP2 = 1;
    私有静态最后长TIME_DELAY = 1000; //1秒
    私有静态最后长TIME_DELAY2 = 500;
    私人浏览视图。
    私人浏览视图2;    私人诠释计数= 0;
    私人TextView的lessonsDialog;
    私有String [] myIntroString;    私人处理程序处理程序=新的处理程序（）{
       公共无效的handleMessage（消息MSG）{
          开关（msg.what）{
            案例MESSAGE_SHOW_POPUP：
               视图（）;
               打破;
           }
       };
    };    @覆盖
    保护无效的onCreate（捆绑savedInstanceState）{
        // TODO自动生成方法存根
        super.onCreate（savedInstanceState）;    的setContentView（R.layout.lessons）;
    //这将消息发送给处理器1秒后显示弹出。
    handler.sendEmptyMessageDelayed（MESSAGE_SHOW_POPUP，TIME_DELAY）;    }    私人无效视图（）{
    // TODO自动生成方法存根
    ViewGroup中父=（ViewGroup中）findViewById（R.id.lessons_bg）;
     鉴于= LayoutInflater.from（getBaseContext（））膨胀（R.layout.lessons_dialog，NULL）;
     parent.addView（视图）;     lessonsDialog =（的TextView）findViewById（R.id.lessonsDialog）;     资源解析度= getResources（）;
     myIntroString = res.getStringArray（R.array.lessons_dialog_array）;     按钮Next按钮=（按钮）findViewById（R.id.next_button）;
     nextButton.setOnClickListener（新View.OnClickListener（）{
         公共无效的onClick（查看视图）{
             如果（计数＆LT; myIntroString.length）{
                 （myIntroString [计数]）lessonsDialog.setText;
                 算上++;
             }其他{
                 如果（myIntroString [-1]！= NULL）{
                     handler2.sendEmptyMessageDelayed（MESSAGE_SHOW_POPUP2，TIME_DELAY2）;
                 }
             }
         }
     }）;    }    私人处理程序handler2 =新的处理程序（）{
           公共无效的handleMessage（消息MSG）{
              开关（msg.what）{
                案例MESSAGE_SHOW_POPUP2：
                   视图2（）;
                   打破;
               }
           }        私人无效视图2（）{
            // TODO自动生成方法存根
             ViewGroup中父=（ViewGroup中）findViewById（R.id.lessons_bg）;
             视图2 = LayoutInflater.from（getBaseContext（））膨胀（R.layout.lessons_start，NULL）;
             parent.addView（视图2）;
             parent.removeView（视图）;
        };
        };
    }
 

解决方案

啊，是的，我现在看到了。你可以这样做：

 的myString [-1]
 

的索引-1阵列不存在。你想做什么？也许的myString [数 - 1]？

on the press of my "next" button I have a speech bubble run through a string array. After all the items finish displaying and the user clicks the "next" button once more I would like to deflate the current child view and inflate a new view. Right now it crashes after the string array finishes displaying on multiple clickings of the "next" button. How can I get this to work?

    package com.jibushi;

    import android.app.Activity;
    import android.content.res.Resources;
    import android.os.Bundle;
    import android.os.Handler;
    import android.os.Message;
    import android.view.LayoutInflater;
    import android.view.View;
    import android.view.ViewGroup;
    import android.widget.Button;
    import android.widget.TextView;

    public class LessonsShell extends Activity{
    private static final int MESSAGE_SHOW_POPUP = 1;
    private static final int MESSAGE_SHOW_POPUP2 = 1;
    private static final long TIME_DELAY = 1000;//1 seconds
    private static final long TIME_DELAY2 = 500;
    private View view;
    private View view2;

    private int count = 0;
    private TextView lessonsDialog;
    private String[] myIntroString;

    private Handler handler = new Handler() {
       public void handleMessage(Message msg) {
          switch(msg.what) {
            case MESSAGE_SHOW_POPUP:
               view();
               break;
           }
       };
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        super.onCreate(savedInstanceState);

    setContentView(R.layout.lessons);
    //this will send a message to the handler to display the popup after 1 seconds.
    handler.sendEmptyMessageDelayed(MESSAGE_SHOW_POPUP,TIME_DELAY);

    }

    private void view() {
    // TODO Auto-generated method stub
    ViewGroup parent = (ViewGroup) findViewById(R.id.lessons_bg);
     view = LayoutInflater.from(getBaseContext()).inflate(R.layout.lessons_dialog, null);
     parent.addView(view);

     lessonsDialog = (TextView) findViewById(R.id.lessonsDialog);

     Resources res = getResources();
     myIntroString = res.getStringArray(R.array.lessons_dialog_array); 

     Button nextButton = (Button) findViewById(R.id.next_button);
     nextButton.setOnClickListener(new View.OnClickListener() {
         public void onClick(View view) {
             if (count < myIntroString.length) {
                 lessonsDialog.setText(myIntroString[count]);
                 count++;
             } else {
                 if (myIntroString[-1] != null) {
                     handler2.sendEmptyMessageDelayed(MESSAGE_SHOW_POPUP2, TIME_DELAY2);
                 }
             }
         }
     });

    }

    private Handler handler2 = new Handler() {
           public void handleMessage(Message msg) {
              switch(msg.what) {
                case MESSAGE_SHOW_POPUP2:
                   view2();
                   break;
               }
           }

        private void view2() {
            // TODO Auto-generated method stub
             ViewGroup parent = (ViewGroup) findViewById(R.id.lessons_bg);
             view2 = LayoutInflater.from(getBaseContext()).inflate(R.layout.lessons_start, null);
             parent.addView(view2); 
             parent.removeView(view);
        };
        };
    }

解决方案

Ah, yes, I see it now. You can't do this:

 myString[-1]

The index -1 does not exist in arrays. What are you trying to do? Perhaps myString[count - 1]?

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