如何從上下文菜單打開圖像視圖？

Question

我想從我的上下文菜單中打開圖像視圖，但是，我不知道如何做到這一點。當單擊上下文菜單中的項目時，我需要顯示圖像視圖。我怎樣才能做到這一點？我是否需要自定義菜單，或者是否可以從上下文菜單打開圖像視圖？對此有何想法？先謝謝你。這是我的代碼。

package com.carouseldemo.main; 

import android.app.Activity; 
import android.media.MediaPlayer; 
import android.os.Bundle; 
import android.view.ContextMenu; 
import android.view.ContextMenu.ContextMenuInfo; 
import android.view.Menu; 

import android.view.MenuInflater; 
import android.view.View; 
import android.widget.TextView; 
import android.widget.Toast; 

import com.carouseldemo.controls.Carousel; 
import com.carouseldemo.controls.CarouselAdapter; 
import com.carouseldemo.controls.CarouselAdapter.AdapterContextMenuInfo; 
import com.carouseldemo.controls.CarouselAdapter.OnItemClickListener; 
import com.carouseldemo.controls.CarouselAdapter.OnItemSelectedListener; 
import com.carouseldemo.controls.CarouselItem; 

public class MainActivity extends Activity { 

@Override 
public boolean onCreateOptionsMenu(Menu menu) { 
super.onCreateOptionsMenu(menu); 
MenuInflater inflater = getMenuInflater(); 
inflater.inflate(R.menu.testmenu1, menu); 
// your code... 
return true;} // true if you want the menu to be displayed; false otherwise 
@Override 
public void onCreateContextMenu(ContextMenu menu, View v, 
     ContextMenuInfo menuInfo) { 
    // Just prepare ourself for unexpected arguments... 

    if (menuInfo == null) { 
     return; 
    } 
    if (!(menuInfo instanceof AdapterContextMenuInfo)) { 
     return; 
    } 

    AdapterContextMenuInfo mi = (AdapterContextMenuInfo) menuInfo; 

    switch (mi.position) { 
    case 0: 

     menu.add("Product 1"); 

     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     break; 
    case 1: 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     break; 
    case 2: 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     break; 
    case 3: 
     menu.add("mouse menu"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     break; 
    case 4: 
     menu.add("panda menu"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     break; 
    case 5: 
     menu.add("rabbit menu"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     menu.add("Product 1"); 
     break; 
    default: 
     break; 
    } 
    super.onCreateContextMenu(menu, v, menuInfo); 
} 

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

    final Carousel carousel = (Carousel) findViewById(R.id.carousel); 
    carousel.setOnItemClickListener(new OnItemClickListener() { 

     public void onItemClick(CarouselAdapter<?> parent, View view, 
       int position, long id) { 
      CarouselItem item = (CarouselItem) parent.getChildAt(position); 

      // HERE: Force context menu 
      carousel.showContextMenuForChild(item); 
      Toast.makeText(
        MainActivity.this, 
        String.format("%s has been clicked", 
          ((CarouselItem) parent.getChildAt(position)) 
            .getName()), Toast.LENGTH_SHORT).show(); 







     } 

     @Override 
     public void onCreateContextMenu(ContextMenu menu, View v, 
       ContextMenuInfo menuInfo) { 

      // TODO Auto-generated method stub 





     } 

     @Override 
     public boolean onCreateOptionsMenu(Menu menu) { 
      // TODO Auto-generated method stub 
      return false; 
     }}); 

    carousel.setOnItemSelectedListener(new OnItemSelectedListener() { 

     public void onItemSelected(CarouselAdapter<?> parent, View view, 
       int position, long id) { 

      final TextView txt = (TextView) (findViewById(R.id.selected_item)); 

      switch (position) { 
      case 0: 
       txt.setText("The cat (Felis catus), also known as the domestic cat or housecat to distinguish it from other felids and felines, is a small, usually furry, domesticated, carnivorous mammal that is valued by humans for its companionship and for its ability to hunt vermin and household pests. Cats have been associated with humans for at least 9,500 years, and are currently the most popular pet in the world. Owing to their close association with humans, cats are now found almost everywhere in the world."); 
       break; 
      case 1: 
       txt.setText("The hippopotamus (Hippopotamus amphibius), or hippo, from the ancient Greek for \"river horse\"(), is a large, mostly herbivorous mammal in sub-Saharan Africa, and one of only two extant species in the family Hippopotamidae (the other is the Pygmy Hippopotamus.) After the elephant, the hippopotamus is the third largest land mammal and the heaviest extant artiodactyl."); 
       break; 
      case 2: 
       txt.setText("A monkey is a primate, either an Old World monkey or a New World monkey. There are about 260 known living species of monkey. Many are arboreal, although there are species that live primarily on the ground, such as baboons. Monkeys are generally considered to be intelligent. Unlike apes, monkeys usually have tails. Tailless monkeys may be called \"apes\", incorrectly according to modern usage; thus the tailless Barbary macaque is called the \"Barbary ape\"."); 
       break; 
      case 3: 
       txt.setText("A mouse (plural: mice) is a small mammal belonging to the order of rodents. The best known mouse species is the common house mouse (Mus musculus). It is also a popular pet. In some places, certain kinds of field mice are also common. This rodent is eaten by large birds such as hawks and eagles. They are known to invade homes for food and occasionally shelter."); 
       break; 
      case 4: 
       txt.setText("The giant panda, or panda (Ailuropoda melanoleuca, literally meaning \"black and white cat-foot\") is a bear native to central-western and south western China.[4] It is easily recognized by its large, distinctive black patches around the eyes, over the ears, and across its round body. Though it belongs to the order Carnivora, the panda's diet is 99% bamboo."); 
       break; 
      case 5: 
       txt.setText("Rabbits (or, colloquially, bunnies) are small mammals in the family Leporidae of the order Lagomorpha, found in several parts of the world. There are eight different genera in the family classified as rabbits, including the European rabbit (Oryctolagus cuniculus), cottontail rabbits (genus Sylvilagus; 13 species), and the Amami rabbit (Pentalagus furnessi, an endangered species on Amami, Japan)"); 

       break; 
      } 

     } 

     public void onNothingSelected(CarouselAdapter<?> parent) { 
     } 

    }); 

    registerForContextMenu(carousel); 
} 

} 

Answer 1

我認爲最好也是最簡單的方法是在對話框中使用自定義佈局顯示圖像，如此處所述。

http://developer.android.com/guide/topics/ui/dialogs.html#CustomLayout

你只需要放一個的ImageView在對話框的佈局，並把所選擇的圖像作爲它的來源。

希望它會有所幫助。