Question

我正在开发一款通过Gridview显示151张照片的Android应用。我有151个声音，我想将每个声音分配给一个图像，所以我可以播放该声音，点击一个图像。我正在使用SoundPool。关于如何做这件事的想法？

package com.example.thefe.newsmartkedex;

import android.media.AudioManager;
import android.media.SoundPool;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.GridView;
import android.widget.Toast;

import static com.example.thefe.newsmartkedex.R.raw.pkmn1;

public class MainActivity extends AppCompatActivity {

    int pkmn1, pkmn2, pkmn3;
    SoundPool mySoundPool = new SoundPool (1, AudioManager.STREAM_MUSIC, 0);


    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        pkmn1 = mySoundPool.load(this, R.raw.pkmn1, 1);
        pkmn2 = mySoundPool.load(this, R.raw.pkmn2, 1);
        pkmn3 = mySoundPool.load(this, R.raw.pkmn3, 1);


        GridView gridview = (GridView) findViewById(R.id.gridview);
        gridview.setAdapter(new ImageAdapter(this));

        gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View v,
                                 int position, long id) {
                position += 1; //forget about this
                Toast.makeText(MainActivity.this, "" + position,
                        Toast.LENGTH_SHORT).show();
                mySoundPool.play(/*???*/,1,1,1,0,1);
            }
        });
    };
}

我的ImageAdapter类的工作原理如下：

package com.example.thefe.newsmartkedex;

import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.GridView;
import android.widget.ImageView;

import java.util.ArrayList;

/**
 * Created by TheFe on 27/09/2016.
 */

public class ImageAdapter extends BaseAdapter {
    private Context mContext;

    public ImageAdapter(Context c, ArrayList list) {
        mContext = c;
    }

    public int getCount() {
        return mThumbIds.length;
    }

    public Object getItem(int position) {
        return null;
    }

    public long getItemId(int position) {
        return 0;
    }

    // create a new ImageView for each item referenced by the Adapter
    public View getView(int position, View convertView, ViewGroup parent) {
        ImageView imageView;
        if (convertView == null) {
            // if it's not recycled, initialize some attributes
            imageView = new ImageView(mContext);
            imageView.setLayoutParams(new GridView.LayoutParams(200, 200));
            imageView.setScaleType(ImageView.ScaleType.CENTER_CROP);
            imageView.setPadding(8, 8, 8, 8);
        } else {
            imageView = (ImageView) convertView;
        }

        imageView.setImageResource(mThumbIds[position]);
        return imageView;
    }

    // references to our images
    private Integer[] mThumbIds = {
            R.drawable.pkmn1, R.drawable.pkmn2,
            R.drawable.pkmn3, R.drawable.pkmn4,
            R.drawable.pkmn5, R.drawable.pkmn6,
            R.drawable.pkmn7, R.drawable.pkmn8,
            R.drawable.pkmn9, R.drawable.pkmn10,
            R.drawable.pkmn11, R.drawable.pkmn12,
            R.drawable.pkmn13, R.drawable.pkmn14,
            R.drawable.pkmn15, R.drawable.pkmn16,
            R.drawable.pkmn17, R.drawable.pkmn18,
            R.drawable.pkmn19, R.drawable.pkmn20,
            R.drawable.pkmn21, R.drawable.pkmn22,
            R.drawable.pkmn23, R.drawable.pkmn24,
            R.drawable.pkmn25, R.drawable.pkmn26,
            R.drawable.pkmn27, R.drawable.pkmn28,
            R.drawable.pkmn29, R.drawable.pkmn30,
            R.drawable.pkmn31, R.drawable.pkmn32,
            R.drawable.pkmn33, R.drawable.pkmn34,
            R.drawable.pkmn35, R.drawable.pkmn36,
            R.drawable.pkmn37, R.drawable.pkmn38,
            R.drawable.pkmn39, R.drawable.pkmn40,
            R.drawable.pkmn41, R.drawable.pkmn42,
            R.drawable.pkmn43, R.drawable.pkmn44,
            R.drawable.pkmn45, R.drawable.pkmn46,
            R.drawable.pkmn47, R.drawable.pkmn48,
            R.drawable.pkmn49, R.drawable.pkmn50,
            R.drawable.pkmn51, R.drawable.pkmn52,
            R.drawable.pkmn53, R.drawable.pkmn54,
            R.drawable.pkmn55, R.drawable.pkmn56,
            R.drawable.pkmn57, R.drawable.pkmn58,
            R.drawable.pkmn59, R.drawable.pkmn60,
            R.drawable.pkmn61, R.drawable.pkmn62,
            R.drawable.pkmn63, R.drawable.pkmn64,
            R.drawable.pkmn65, R.drawable.pkmn66,
            R.drawable.pkmn67, R.drawable.pkmn68,
            R.drawable.pkmn69, R.drawable.pkmn70,
            R.drawable.pkmn71, R.drawable.pkmn72,
            R.drawable.pkmn73, R.drawable.pkmn74,
            R.drawable.pkmn75, R.drawable.pkmn76,
            R.drawable.pkmn77, R.drawable.pkmn78,
            R.drawable.pkmn79, R.drawable.pkmn80,
            R.drawable.pkmn81, R.drawable.pkmn82,
            R.drawable.pkmn83, R.drawable.pkmn84,
            R.drawable.pkmn85, R.drawable.pkmn86,
            R.drawable.pkmn87, R.drawable.pkmn88,
            R.drawable.pkmn89, R.drawable.pkmn90,
            R.drawable.pkmn91, R.drawable.pkmn92,
            R.drawable.pkmn93, R.drawable.pkmn94,
            R.drawable.pkmn95, R.drawable.pkmn96,
            R.drawable.pkmn97, R.drawable.pkmn98,
            R.drawable.pkmn99, R.drawable.pkmn100,
            R.drawable.pkmn101, R.drawable.pkmn102,
            R.drawable.pkmn103, R.drawable.pkmn104,
            R.drawable.pkmn105, R.drawable.pkmn106,
            R.drawable.pkmn107, R.drawable.pkmn108,
            R.drawable.pkmn109, R.drawable.pkmn110,
            R.drawable.pkmn111, R.drawable.pkmn112,
            R.drawable.pkmn113, R.drawable.pkmn114,
            R.drawable.pkmn115, R.drawable.pkmn116,
            R.drawable.pkmn117, R.drawable.pkmn118,
            R.drawable.pkmn119, R.drawable.pkmn120,
            R.drawable.pkmn121, R.drawable.pkmn122,
            R.drawable.pkmn123, R.drawable.pkmn124,
            R.drawable.pkmn125, R.drawable.pkmn126,
            R.drawable.pkmn127, R.drawable.pkmn128,
            R.drawable.pkmn129, R.drawable.pkmn130,
            R.drawable.pkmn131, R.drawable.pkmn132,
            R.drawable.pkmn133, R.drawable.pkmn134,
            R.drawable.pkmn135, R.drawable.pkmn136,
            R.drawable.pkmn137, R.drawable.pkmn138,
            R.drawable.pkmn139, R.drawable.pkmn140,
            R.drawable.pkmn141, R.drawable.pkmn142,
            R.drawable.pkmn143, R.drawable.pkmn144,
            R.drawable.pkmn145, R.drawable.pkmn146,
            R.drawable.pkmn147, R.drawable.pkmn148,
            R.drawable.pkmn149, R.drawable.pkmn150,
            R.drawable.pkmn151
    };
}

Answer 1

创建一个模型类，其中包含对图像的引用以及与之关联的声音。单击某个项目时，获取与该对象对应的对象，使用该引用加载SoundPool对象并进行播放。

public class Item {

    int imageId;
    int soundID;

    public Item(int imageId, int soundID){
        this.imageId = imageId;
        this.soundID = soundID;
    }

    public int getImageId() {
        return imageId;
    }

    public void setImageId(int imageId) {
        this.imageId = imageId;
    }

    public int getSoundID() {
        return soundID;
    }

    public void setSoundID(int soundID) {
        this.soundID = soundID;
    }
}

创建项目列表

List<Item> items = new ArrayList<Items>();
for(int i = 0; i < 10; i++) {
    items.add(new Item(R.drawable.your_image_id, R.raw.your_sound_id));
}

将此列表传递给适配器。您将修改ImageAdapter的构造函数。像这样初始化你的适配器，

GridView gridview = (GridView) findViewById(R.id.gridview);
ImageAdapter adapter = new ImageAdapter(this, items);
gridview.setAdapter(adapter);

在你里面onItemClick，

gridview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
    public void onItemClick(AdapterView<?> parent, View v, int position, long id) {
        // your code

        Item selectedItem = items.get(position);
        int soundID = selectedItem.getSoundID();
        pkmn1 = mySoundPool.load(MainActivity.this, soundID, 1);
        mySoundPool.play(pkmn1, 1, 1, 1, 0, 1);
    }
});

如何将SoundPool对象分配给由Gridview在Java中创建的元素？

1 个答案: