android - 打开多个 Listview 项目点击一类

Question

希望大家能帮忙。

我有一个活动可以处理所有 10 个图像按钮点击和列表视图意图。我要做的是为所有列表视图按钮单击设置 1 个布局。并在此布局中调用不同的数据。当我开始这个项目时，我有很多活动，直到一个伟大的堆栈溢出用户指出我可以让它变得更简单，我所做的并且让它变得很清楚。

  package com.example.testtest;

  import android.app.Activity;
  import android.graphics.Typeface;
  import android.os.Bundle;
  import android.widget.ArrayAdapter;
  import android.widget.ImageView;
  import android.widget.ListView;
  import android.widget.TextView;

  public class Listviewact extends Activity {

public void onCreate(Bundle b) {
    super.onCreate(b);
    setContentView(R.layout.listview_layout);

    Typeface tf = Typeface.createFromAsset(getAssets(),"fonts/AlexBrush-Regular-OTF.otf");
    TextView tv = (TextView) findViewById(R.id.textView1);
    tv.setTypeface(tf);
  }

   public void onResume() {
    super.onResume();
    int buttonId = getIntent().getIntExtra("buttonId", 0);
    int buttonIdx = getButtonIdx(buttonId);

    // find and set image according to buttonId
    int imageId = IMAGE_IDS[buttonIdx];        // image to show for given button
    ImageView imageView = (ImageView)findViewById(R.id.imageView1);
    imageView.setImageResource(imageId);

    // find and set listview imtes according to buttonId
    String[] items = LISTVIEW_DATA[buttonIdx]; // listview items to show for given button
    ListView listView = (ListView)findViewById(R.id.listView1);
    ArrayAdapter adapter = new ArrayAdapter(this, android.R.layout.simple_list_item_1, items);
    listView.setAdapter(adapter);
}

private void setListAdapter(ArrayAdapter adapter) {
    // TODO Auto-generated method stub

}

// a little helper to map ids to array indices 
// to be able to fetch the correct image and listview data later
private final static int[] BUTTON_IDS = new int[] {
    R.id.imageButton1, 
    R.id.imageButton2, 
    R.id.imageButton3, 
    R.id.imageButton4, 
    R.id.imageButton5, 
    R.id.imageButton6
};

// 6 images
private final static int[] IMAGE_IDS = new int[] {
    R.drawable.bmw,
    R.drawable.ford,
    R.drawable.honda,
    R.drawable.toy,
    R.drawable.vok2,
    R.drawable.ic_launcher
};

// 6 different sets of strings for the listviews
private final static String[][] LISTVIEW_DATA = new String[][] {
    {"First A", "First B", "First C", "First D","First E","First F"},
    {"Second A", "Second B", "Second C"},
    {"Third A", "Third B", "Third C"},
    {"Forth A", "Forth B", "Forth C"},
    {"Fifth A", "Fifth B", "Fifth C"},
    {"Sixth A", "Sixth B", "Sixth C"},
};

// map button id to array index
static private int getButtonIdx(int id) {
    for(int i = 0; i<BUTTON_IDS.length; i++) {
        if (BUTTON_IDS[i] == id) return i;
    }
    return 0;    // should not happen
}
}

如果有人能告诉我如何制作一个类，我可以从我的代码中调用所有列表视图中的所有项目点击，那就太好了。

 package com.example.testtest;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ArrayAdapter;
import android.widget.ImageButton;
import android.widget.ListView;

public class MainActivity extends Activity implements OnClickListener{

@Override
 protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.layout_of_button);
ImageButton btn1 = (ImageButton)findViewById(R.id.imageButton1);
ImageButton btn2 = (ImageButton)findViewById(R.id.imageButton2);
ImageButton btn3 = (ImageButton)findViewById(R.id.imageButton3);
ImageButton btn4 = (ImageButton)findViewById(R.id.imageButton4);
ImageButton btn5 = (ImageButton)findViewById(R.id.imageButton5);
ImageButton btn6 = (ImageButton)findViewById(R.id.imageButton6);
btn1.setOnClickListener(this);
btn2.setOnClickListener(this);
btn3.setOnClickListener(this);
btn4.setOnClickListener(this);
btn5.setOnClickListener(this);
btn6.setOnClickListener(this);
}

@Override
public void onClick(View v) {
    switch(v.getId()) {
    // if one of the image buttons is pressed...
    case R.id.imageButton1:
    case R.id.imageButton2:
    case R.id.imageButton3:
    case R.id.imageButton4:
    case R.id.imageButton5:
    case R.id.imageButton6:   
        Intent intent = new Intent(this, Listviewact.class);
        // pass ID of pressed button to listview-activity
        intent.putExtra("buttonId", v.getId());  
        startActivity(intent);
        break;
    // here you could place handling of other clicks if necessary...        
    }
}

private void setListAdapter(ArrayAdapter<String> arrayAdapter) {
// TODO Auto-generated method stub

}

private ListView getListView() {
// TODO Auto-generated method stub
   return null;
 }
 }

干杯。

http://img40.imageshack.us/img40/705/f6h9.png

score 0 · Accepted Answer

您正在使用ListView但不使用它的任何回调？在这里，这是我用于ListView. 我将活动放入我的数组中，但您可以放入任何东西。修改R.layout.mfd_view允许您为每个列表项放置您想要的任何内容。如果Button那是你需要的。希望这可以帮助。我还在学习自己。

import android.app.Activity;
import android.app.ListFragment;
import android.content.Context;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListAdapter;
import android.widget.ListView;

public class MyListFragment extends ListFragment {
String fragmentBackStack;
MyMapHandler handler;
OnViewSelectedListener mListener;

/**
 * An array of POJOs used to hold the info about the fragments we'll be
 * swapping between This should be inserted into an array adapter of some
 * sort before being passed onto ListAdapter
 */
private static final ViewDetails[] ACTIVITY_DETAILS = {
        new ViewDetails(R.string.action_largeTach,
                R.string.largeTach_description, LargeTachActivity.class),
        new ViewDetails(R.string.action_map, R.string.map_description,
                MyMapHandler.class),
        new ViewDetails(R.string.action_navigation,
                R.string.navigation_description, NavigationActivity.class),
        new ViewDetails(R.string.action_raceMode,
                R.string.raceMode_description, RaceModeActivity.class),
        new ViewDetails(R.string.action_settings,
                R.string.settings_description, SettingsFragment.class),
        new ViewDetails(R.string.action_extraInfo,
                R.string.extraInfo_description, ExtraInfoActivity.class) };

/**
 * @author PyleC1
 * 
 *         A POJO that holds a class object and it's resource info
 */
public static class ViewDetails {
    private final Class<? extends Activity> viewActivity;
    private int titleId;
    private int descriptionId;

    /**
     * @param titleId
     *            The resource ID of the string for the title
     * @param descriptionId
     *            The resource ID of the string for the description
     * @param activityClass
     *            The fragment's class associated with this list position
     */
    ViewDetails(int titleId, int descriptionId,
            Class<? extends Activity> viewActivity) {

        super();
        this.titleId = titleId;
        this.descriptionId = descriptionId;
        this.viewActivity = viewActivity;
    }

    public Class<? extends Activity> getViewActivity() {
        return viewActivity;
    }
}

/**
 * @author PyleC1
 * 
 *         Extends the ArrayAdapter class to support our custom array that
 *         we'll insert into the ListAdapter so the user can pick between
 *         MFD screens at boot time.
 */
private static class CustomArrayAdapter extends ArrayAdapter<ViewDetails> {
    public CustomArrayAdapter(Context context, ViewDetails[] activities) {
        super(context, R.layout.mfd_view, R.id.mfdTitle, activities);
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        MFDView mfdView;

        if (convertView instanceof MFDView) {
            mfdView = (MFDView) convertView;
        } else {
            mfdView = new MFDView(getContext());
        }

        ViewDetails details = getItem(position);

        mfdView.setTitleId(details.titleId);
        mfdView.setDescriptionId(details.descriptionId);

        return mfdView;
    }
}

public void onAttach(Activity activity) {
    super.onAttach(activity);

    ListAdapter listAdapter = new CustomArrayAdapter(getActivity(),
            ACTIVITY_DETAILS);
    setListAdapter(listAdapter);

    try {
        mListener = (OnViewSelectedListener) activity;
    } catch (ClassCastException e) {
        throw new ClassCastException(activity.toString()
                + " must implement OnViewSelectedListener!");
    }
}

@Override
public void onResume() {
    super.onResume();
}

public interface OnViewSelectedListener {
    public void onViewSelected(Class<? extends Activity> activityClass);
}

public void onListItemClick(ListView l, View v, int position, long id) {
    ViewDetails details = (ViewDetails) getListAdapter().getItem(position);

    mListener.onViewSelected(details.viewActivity);
}
}

请注意，任何调用此片段的活动都必须实现该OnViewSelectedListener接口。如果您将此作为子类添加到您的主要活动中，则不需要这样做。public void onListItemClick(arg0, arg1, arg2, arg3)回调很好。您只需从那里交换片段或调用活动。

score 0 · Accepted Answer

如果我明白你想要什么，你可以创建一个类，static Arraylist每次单击一个项目时都会附加类似的东西。所以创建一个类似的类

public class Data class
{
    static ArrayList<String> dataArray = new ArrayList<String>();;

    public Data()
    {
        // empty constructor but could be used if needed
    }

然后你可以在这里添加不同的getters/setters或你需要的任何东西。当您单击一个项目时，您只需调用类似

Data.dataArray.add("stuff");

然后在你的 next 中检索这里的项目Activity。

如果这太复杂或超出您的需要，那么您可以ArrayList通过Intent

意图

此外，这只是一个偏好，但由于您的所有Buttons 都做同样的事情，您可以取消初始化它们并设置listeners它们。在xml中只需添加

`android:onClick="someFunctionName"`

每个Button然后使用该函数名称

public void someFunctionName(View v) {
switch(v.getId()) {
// if one of the image buttons is pressed...

    Intent intent = new Intent(this, Listviewact.class);
    // pass ID of pressed button to listview-activity
    intent.putExtra("buttonId", v.getId());  
    startActivity(intent);
    break;
// here you could place handling of other clicks if necessary...        
}

也不需要声明，因为它们都做同样的事情，而你在声明中case不需要implements OnClickListenerActivity

android - 打开多个 Listview 项目点击一类

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