Question

我正在使用图库视图制作记忆游戏。我希望所有卡片都显示在底部，当用户从图库中选择一张卡片时，特定卡片会显示在其上方（在图片视图中）。当用户触摸该卡时，卡应该转动（使用翻转动画）并且应该显示卡的正面（这应该是新的活动）。在这个翻转过程中，我一直想在底部显示画廊。我怎样才能做到这一点？我有以下代码没有错误，但应用程序崩溃后才开始。在查看log cat时，它会在启动新酸度时出现错误。

import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.BaseAdapter;
import android.widget.Gallery;
import android.widget.ImageView;
import android.widget.Toast;

public class GalleryActivity extends Activity { 
    //---the images to display---
    Integer[] imageIDs = {
            R.drawable.you,
            R.drawable.date,
            R.drawable.competition,
            R.drawable.contacts,
            R.drawable.memory,
            R.drawable.mission,
            R.drawable.recognition,
            R.drawable.report,
            R.drawable.stallion,
            R.drawable.strategy,
            R.drawable.team

    };
    ImageView youview;

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

        Gallery gallery = (Gallery) findViewById(R.id.gallery1);



        gallery.setAdapter(new ImageAdapter(this));
        gallery.setOnItemClickListener(new OnItemClickListener()
        {
            public void onItemClick(AdapterView<?> parent, View v,
            int position, long id)
            {
                Toast.makeText(getBaseContext(),
                        "card" + (position + 1) + " selected",
                        Toast.LENGTH_SHORT).show();

                //---display the images selected---
                ImageView imageView = (ImageView) findViewById(R.id.image1);
                imageView.setImageResource(imageIDs[position]);
            }
        });

        youview=(ImageView)findViewById(R.drawable.you);
        youview.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent = new Intent(GalleryActivity.this, You.class);
                startActivity(intent);
                }
        });
    }

    public class ImageAdapter extends BaseAdapter
    {
        Context context;
        int itemBackground;

        public ImageAdapter(Context c)
        {
            context = c;
            //---setting the style---
            TypedArray a = obtainStyledAttributes(R.styleable.Gallery1);            

            itemBackground = a.getResourceId(
                R.styleable.Gallery1_android_galleryItemBackground, 0);                

            a.recycle();
        }

        //---returns the number of images---
        public int getCount() {
            return imageIDs.length;
        }


        //---returns the item---
        public Object getItem(int position) {
            return position;
        }

         //---returns the ID of an item---
        public long getItemId(int position) {
            return position;
        }      

        //---returns an ImageView view---
        public View getView(int position, View convertView, ViewGroup parent) {
            ImageView imageView;
            if (convertView == null) {
                imageView = new ImageView(context);
                imageView.setImageResource(imageIDs[position]);
                imageView.setScaleType(ImageView.ScaleType.FIT_XY);
                imageView.setLayoutParams(new Gallery.LayoutParams(150, 120));                  
            } else {
                imageView = (ImageView) convertView;
            }            
            imageView.setBackgroundResource(itemBackground);
            return imageView;
        }
    }



}

这是我正在使用的布局： -

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"    
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" 
    android:background="#006600">

<TextView
    android:layout_width="fill_parent"
    android:layout_height="wrap_content"
    android:text="Choose the card" 
    android:textSize="20dp"
    android:textStyle="bold"/>    

<Gallery
    android:id="@+id/gallery1"
    android:layout_width="fill_parent"
    android:layout_height="wrap_content" 
    android:layout_alignParentBottom="true"
    />

<ImageView
    android:id="@+id/image1"
    android:layout_width="320dp"
    android:layout_height="400dp"
    android:layout_above="@+id/gallery1"
    android:scaleType="fitXY" />

</RelativeLayout>

Answer 1

你应该使用一个片段：

private void addCardFragment() {
    String fragmentTag = getFragmentTag();
    FragmentTransaction fragmentTransaction = getFragmentManager().beginTransaction();
    fragmentTransaction.setCustomAnimations(R.animator.card_flip_in, R.animator.card_flip_out);

    CardFragment fragment = new CardFragment();
    //set bundle with argument for image id to show if fragment

    fragmentTransaction.replace(R.id.your_relative_or_frame_layout, CardFragment, fragmentTag);
    fragmentTransaction.commit();
    fragmentTransaction = null;
}

如何在保持画廊的同时开始新的活动？

1 个答案: