Android 自定義分享列表ACTION_SEND

看到最近都在做自定義的東西，因爲比較靈活，還可以擺脫系統自身不怎麼漂亮的UI，(大家都懂得)所以自己也做了下自定義的分享列表，用PopupWindow的方式彈出。

先上效果圖:

1、佈局:

popup_share.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:layout_width="fill_parent" 
	android:layout_height="wrap_content" >
  <ListView 
		android:id="@+id/share_list" 
		android:background="#2F4F4F" 
		android:fadingEdge="none" 
		android:layout_width="fill_parent" 
		android:layout_height="wrap_content" 
		android:cacheColorHint="#00000000" 
		android:divider="#E2DD75" 
		android:dividerHeight="1.0dip" 
		android:headerDividersEnabled="true" 
		android:footerDividersEnabled="false" />
</LinearLayout>

popup_share_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
	android:gravity="center_vertical" 
	android:layout_width="wrap_content" 
	android:layout_height="wrap_content" 
	android:padding="2.0dip" >
	<ImageView 
		android:id="@+id/share_item_icon" 
		android:layout_width="32.0dip" 
		android:layout_height="32.0dip" 
		android:layout_marginLeft="3.0dip" 
		android:scaleType="fitXY" />
	<TextView 
		android:id="@+id/share_item_name" 
		android:gravity="center" 
		android:layout_width="wrap_content" 
		android:layout_height="wrap_content" 
		android:text="分享" 
		android:textColor="@color/white" 
		android:singleLine="true" 
		android:textSize="@dimen/s_size" 
		android:layout_marginLeft="3.0dip" 
		android:layout_marginRight="3.0dip" />
</LinearLayout>

2、查詢手機內所有支持分享的應用列表

public List<ResolveInfo> getShareApps(Context context) {	
		List<ResolveInfo> mApps = new ArrayList<ResolveInfo>();
		Intent intent = new Intent(Intent.ACTION_SEND, null);
		intent.addCategory(Intent.CATEGORY_DEFAULT);
		intent.setType("text/plain");
//		intent.setType("*/*");
		PackageManager pManager = context.getPackageManager();
		mApps = pManager.queryIntentActivities(intent, 
				PackageManager.COMPONENT_ENABLED_STATE_DEFAULT);
		return mApps;
	}

注：ApplicationInfo是從一個特定的應用得到的信息。這些信息是從相對應的Androdimanifest.xml的< application>標籤中收集到的。

ResolveInfo這個類是通過解析一個與IntentFilter相對應的intent得到的信息。它部分地對應於從AndroidManifest.xml的< intent>標籤收集到的信息。

得到List列表，我自建的AppInfo類，自己建一個就行

private List<AppInfo> getShareAppList() {	
		List<AppInfo> shareAppInfos = new ArrayList<AppInfo>();
		PackageManager packageManager = getPackageManager();
		List<ResolveInfo> resolveInfos = getShareApps(mContext);
		if (null == resolveInfos) {
			return null;
		} else {
			for (ResolveInfo resolveInfo : resolveInfos) {
				AppInfo appInfo = new AppInfo();
				appInfo.setAppPkgName(resolveInfo.activityInfo.packageName);
//				showLog_I(TAG, "pkg>" + resolveInfo.activityInfo.packageName + ";name>" + resolveInfo.activityInfo.name);
				appInfo.setAppLauncherClassName(resolveInfo.activityInfo.name);
				appInfo.setAppName(resolveInfo.loadLabel(packageManager).toString());
				appInfo.setAppIcon(resolveInfo.loadIcon(packageManager));
				shareAppInfos.add(appInfo);
			}
		}		
		return shareAppInfos;
	}

3、彈出PopupWindow的實現

private void initSharePopupWindow(View parent) {
		PopupWindow sharePopupWindow = null;
		View view = null;
		ListView shareList = null;
		if(null == sharePopupWindow) {
			//加載佈局文件
			view = LayoutInflater.from(DetailExchangeActivity.this).inflate(R.layout.popup_share, null);
			shareList = (ListView) view.findViewById(R.id.share_list);
			List<AppInfo> shareAppInfos = getShareAppList();
			final ShareCustomAdapter adapter = new ShareCustomAdapter(mContext, shareAppInfos);
			shareList.setAdapter(adapter);
			
			shareList.setOnItemClickListener(new OnItemClickListener() {

				@Override
				public void onItemClick(AdapterView<?> parent, View view,
						int position, long id) {
					// TODO Auto-generated method stub
					Intent shareIntent = new Intent(Intent.ACTION_SEND);
					AppInfo appInfo = (AppInfo) adapter.getItem(position);
					shareIntent.setComponent(new ComponentName(appInfo.getAppPkgName(), appInfo.getAppLauncherClassName()));
					shareIntent.setType("text/plain");
//					shareIntent.setType("*/*");
					//這裏就是組織內容了，
					shareIntent.putExtra(Intent.EXTRA_TEXT, "測試，這裏發送推廣地址");
					shareIntent.setFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
					DetailExchangeActivity.this.startActivity(shareIntent);
				}
			});
			
			sharePopupWindow = new PopupWindow(view, 
					(int)(160 * density), LinearLayout.LayoutParams.WRAP_CONTENT);
		}
		//使其聚焦
		sharePopupWindow.setFocusable(true);
		//設置允許在外點擊消失
		sharePopupWindow.setOutsideTouchable(true);
		// 這個是爲了點擊“返回Back”也能使其消失，並且並不會影響你的背景
		sharePopupWindow.setBackgroundDrawable(new BitmapDrawable());
		//xoff,yoff基於anchor的左下角進行偏移。正數表示下方右邊，負數表示（上方左邊）
		//showAsDropDown(parent, xPos, yPos);
		sharePopupWindow.showAsDropDown(parent, -5, 5);
	}

注：ShareCustomAdapter自己建一個就行了。(有一個圖標和一個分享的名)

參考地址:

PackageInfo、ResolveInfo