在列表视图中显示图像而不是文本

-1

嗨，大家好。这是来自youtube api演示的代码。我只是想自定义列表视图，而不是显示一个文本点击它我想将它替换为列表视图中每个项目的特定图像（来自可绘制文件夹的图像）....要澄清，在哪里出现“显示我的频道“...”My Playlist1“....它应该会出现一个图像在列表视图中显示图像而不是文本

package com.examples.youtubeapidemo; 

import com.google.android.youtube.player.YouTubeIntents; 

import android.app.Activity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.view.View; 
import android.widget.AdapterView; 
import android.widget.AdapterView.OnItemClickListener; 
import android.widget.ListView; 
import android.widget.TextView; 

import com.examples.youtubeapidemo.adapter.DemoArrayAdapter; 
import com.examples.youtubeapidemo.adapter.DemoListViewItem; 

import java.util.ArrayList; 
import java.util.List; 

/** 
* A sample activity which shows how to use the {@link YouTubeIntents} static methods  to create 
* Intents that navigate the user to Activities within the main YouTube application. 
*/ 
public final class IntentsDemoActivity extends Activity implements OnItemClickListener { 

// This is the value of Intent.EXTRA_LOCAL_ONLY for API level 11 and above. 
private static final String EXTRA_LOCAL_ONLY = "android.intent.extra.LOCAL_ONLY"; 
private static final String VIDEO_ID = "tKIISemrwJ8"; 
private static final String PLAYLIST_ID = "PL75F25C99BA786497"; 
private static final String PLAYLIST_ID2 = "PL75F25C99BA786497"; 
private static final String USER_ID = "felipeneto"; 
private static final int SELECT_VIDEO_REQUEST = 1000; 

private List<DemoListViewItem> intentItems; 

@Override 
public void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.intents_demo); 

intentItems = new ArrayList<DemoListViewItem>(); 
intentItems.add(new IntentItem("Show My Channel", IntentType.OPEN_USER)); 
intentItems.add(new IntentItem("My Playlist 1", IntentType.OPEN_PLAYLIST)); 
intentItems.add(new IntentItem("My Playlist 2", IntentType.OPEN_PLAYLIST2)); 
intentItems.add(new IntentItem("Featured", IntentType.PLAY_VIDEO)); 
intentItems.add(new IntentItem("Search", IntentType.OPEN_SEARCH)); 


ListView listView = (ListView) findViewById(R.id.intent_list); 
DemoArrayAdapter adapter = 
    new DemoArrayAdapter(this, R.layout.list_item, intentItems); 
listView.setAdapter(adapter); 
listView.setOnItemClickListener(this); 

TextView youTubeVersionText = (TextView) findViewById(R.id.youtube_version_text); 
String version = YouTubeIntents.getInstalledYouTubeVersionName(this); 
if (version != null) { 
    String text = String.format(getString(R.string.youtube_currently_installed), version); 
    youTubeVersionText.setText(text); 
} else { 
    youTubeVersionText.setText(getString(R.string.youtube_not_installed)); 
} 
} 

public boolean isIntentTypeEnabled(IntentType type) { 
    switch (type) { 
    case PLAY_VIDEO: 
    return YouTubeIntents.canResolvePlayVideoIntent(this); 
    case OPEN_PLAYLIST: 
    return YouTubeIntents.canResolveOpenPlaylistIntent(this); 
    case OPEN_PLAYLIST2: 
     return YouTubeIntents.canResolveOpenPlaylistIntent(this); 
    case PLAY_PLAYLIST: 
    return YouTubeIntents.canResolvePlayPlaylistIntent(this); 
    case OPEN_SEARCH: 
    return YouTubeIntents.canResolveSearchIntent(this); 
    case OPEN_USER: 
    return YouTubeIntents.canResolveUserIntent(this); 

} 

return false; 
} 

    public void onItemClick(AdapterView<?> parent, View view, int position, long id) { 
    IntentItem clickedIntentItem = (IntentItem) intentItems.get(position); 

Intent intent; 
switch (clickedIntentItem.type) { 
    case PLAY_VIDEO: 
    intent = YouTubeIntents.createPlayVideoIntentWithOptions(this, VIDEO_ID, true, false); 
    startActivity(intent); 
    break;  
    case OPEN_PLAYLIST: 
    intent = YouTubeIntents.createOpenPlaylistIntent(this, PLAYLIST_ID); 
    startActivity(intent); 
    break; 
    case OPEN_PLAYLIST2: 
     intent = YouTubeIntents.createOpenPlaylistIntent(this, PLAYLIST_ID2); 
     startActivity(intent); 
     break; 
    case PLAY_PLAYLIST: 
    intent = YouTubeIntents.createPlayPlaylistIntent(this, PLAYLIST_ID); 
    startActivity(intent); 
    break; 
    case OPEN_SEARCH: 
    intent = YouTubeIntents.createSearchIntent(this, USER_ID); 
    startActivity(intent); 
    break; 
    case OPEN_USER: 
    intent = YouTubeIntents.createUserIntent(this, USER_ID); 
    startActivity(intent); 
    break; 

    } 
    } 

    @Override 
protected void onActivityResult(int requestCode, int resultCode, Intent returnedIntent) { 
if (resultCode == RESULT_OK) { 
    switch (requestCode) { 
    case SELECT_VIDEO_REQUEST: 
     Intent intent = YouTubeIntents.createUploadIntent(this, returnedIntent.getData()); 
     startActivity(intent); 
     break; 
    } 
} 
super.onActivityResult(requestCode, resultCode, returnedIntent); 
    } 

    private enum IntentType { 
PLAY_VIDEO, 
OPEN_PLAYLIST, 
OPEN_PLAYLIST2, 
PLAY_PLAYLIST, 
OPEN_USER, 
OPEN_SEARCH, 

    } 

    private final class IntentItem implements DemoListViewItem { 

    public final String title; 
    public final IntentType type; 

    public IntentItem(String title, IntentType type) { 
    this.title = title; 
    this.type = type; 
    } 

    public String getTitle() { 
    return title; 
    } 

    public boolean isEnabled() { 
    return isIntentTypeEnabled(type); 
    } 

    public String getDisabledText() { 
    return getString(R.string.intent_disabled); 
    } 

    } 

    }

我应该修改我的DemoArrayAdapter.java。但是怎么样？我是一个新手

package com.examples.youtubeapidemo.adapter; 

import android.content.Context; 
import android.graphics.Color; 
import android.view.LayoutInflater; 
import android.view.View; 
import android.view.ViewGroup; 
import android.widget.ArrayAdapter; 
import android.widget.TextView; 

import com.examples.youtubeapidemo.R; 

import java.util.List; 

/** 
* A convenience class to make ListViews easier to use in the demo activities. 
*/ 
public final class DemoArrayAdapter extends ArrayAdapter<DemoListViewItem> { 

    private final LayoutInflater inflater; 

    public DemoArrayAdapter(Context context, int textViewResourceId, List<DemoListViewItem> objects) { 
    super(context, textViewResourceId, objects); 
    inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
    } 

    @Override 
    public View getView(int position, View view, ViewGroup parent) { 
    if (view == null) { 
    view = inflater.inflate(R.layout.list_item, null); 
    } 

    TextView textView = (TextView) view.findViewById(R.id.list_item_text); 
    textView.setText(getItem(position).getTitle()); 
    TextView disabledText = (TextView) view.findViewById(R.id.list_item_disabled_text); 
    disabledText.setText(getItem(position).getDisabledText()); 

    if (isEnabled(position)) { 
    disabledText.setVisibility(View.INVISIBLE); 
    textView.setTextColor(Color.WHITE); 
    } else { 
    disabledText.setVisibility(View.VISIBLE); 
    textView.setTextColor(Color.GRAY); 
    } 

    return view; 
    } 

    @Override 
    public boolean areAllItemsEnabled() { 
    // have to return true here otherwise disabled items won't show a divider in the list. 
    return true; 
    } 

    @Override 
    public boolean isEnabled(int position) { 
    return getItem(position).isEnabled(); 
    } 

    public boolean anyDisabled() { 
    for (int i = 0; i < getCount(); i++) { 
    if (!isEnabled(i)) { 
     return true; 
     } 
    } 
    return false; 
    } 

}

来源

2013-03-02 Fotogênicas Brasil