小编Cat*_*oux的帖子

所以我试图使用依赖于用户输入的if-else语句.当用户的输入只有一个单词时,它可以工作,但是,多个单词输入无法识别并触发else语句.我该如何解决这个问题？

import java.util.Scanner;


public class MyFirstJavaClass {

public static void main(String[] args) {
    @SuppressWarnings("resource")
    Scanner myScanner = new Scanner(System.in);
    String answer;
    System.out.println("Catch the tiger or run away?");
    answer = myScanner.next();


         if (answer.equals("Catch the tiger"  )) {
            System.out.println("You've been mauled by a tiger! What were you thinking?");
            answer = myScanner.next();          

    } else {
        System.out.println("run away");
    }
  }
}

int[] high = {2,3,4,5,6};

数组是否可以给出-1的恒定值？清除{2,3,4,5,6}都等于-1.

确定活动1在gridVideoView中显示来自SD卡的视频缩略图.我希望能够点击并将数据传递到活动2并播放这些视频.我买的这本书只告诉我如何用字符串做这个.我怎么能这样做,所以当我点击活动1中的视频时,它会被传递并可以在活动2中播放？如果你想要我会发布的代码.

Intent intent = new Intent(getBaseContext(), Editor.class); intent.putExtra("mnt/sdcard-ext", _ID); startActivity(intent);

       private VideoView video;
       private MediaController ctlr;
       File clip=new File(Environment.getExternalStorageDirectory(),
              "mnt/sdcard-ext");

      if (clip.exists()) {
      video=(VideoView)findViewById(R.id.video);
      video.setVideoPath(clip.getAbsolutePath());

       ctlr=new MediaController(this);
       ctlr.setMediaPlayer(video);
       video.setMediaController(ctlr);
       video.requestFocus();
       video.start();
      }
    }
 }

我如何在VideoView中引用意图？