Android中的桌面快捷方式

转http://www.cnblogs.com/CoolPigs/p/3317234.html

一、判断是否已有快捷方式

private String getAuthorityFromPermission(Context context, String permission){
if (permission == null) return null;
List<PackageInfo> packs = context.getPackageManager().getInstalledPackages(PackageManager.GET_PROVIDERS);
if (packs != null) {
for (PackageInfo pack : packs) {
ProviderInfo[] providers = pack.providers;
if (providers != null) {
for (ProviderInfo provider : providers) {
if (permission.equals(provider.readPermission)) return provider.authority;
if (permission.equals(provider.writePermission)) return provider.authority;
}
}
}
}

return null;
}

private boolean hasShortcut(Context context,String shortCutName)
{
boolean has = false;
final ContentResolver cr = context.getContentResolver();
final String AUTHORITY = getAuthorityFromPermission(context, "com.android.launcher.permission.READ_SETTINGS");

final Uri CONTENT_URI = Uri.parse("content://" + AUTHORITY + "/favorites?notify=true");

//确认content Provider中是否有快捷键信息
Cursor c = cr.query(CONTENT_URI,
new String[] {"title","iconResource" },
"title=?",
new String[] {shortCutString.trim()},
null);
if(c != null && c.getCount() > 0){
has= true ;
}
return has;
}

二、添加快捷方式

private void addShortCut(Context mContext)
{

boolean has = hasShortcut(mContext, mContext.getString(R.string.str_app_name));

if(has)
{
return;
}

Intent shortCutIntent = null;
int shortCutNameId = R.string.app_name;
int shortCutIconId = R.drawable.app_icon;
String pkg = PACKAGE_NAME;

boolean installed = isInstalledApp(mContext);

if(installed)
{

Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
resolveIntent.addCategory(Intent.CATEGORY_LAUNCHER);
resolveIntent.setPackage(pkg);
List<ResolveInfo> apps = mContext.getPackageManager().queryIntentActivities(resolveIntent, PackageManager.GET_ACTIVITIES);

shortCutIntent = new Intent();
if((apps != null) && (apps.size() != 0))
{
shortCutIntent.setComponent(new ComponentName(pkg, apps.get(0).activityInfo.name));
}
}
else
{
shortCutIntent = new Intent(mContext.getApplicationContext(), AppActivity.class);
}

Intent shortcut = new Intent("com.android.launcher.action.INSTALL_SHORTCUT");

//快捷方式的名称
shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, mContext.getString(shortCutNameId));
shortcut.putExtra("duplicate", false); //不允许重复创建

//快捷方式的图标
ShortcutIconResource iconRes = Intent.ShortcutIconResource.fromContext(mContext.getApplicationContext(), shortCutIconId);
shortcut.putExtra(Intent.EXTRA_SHORTCUT_ICON_RESOURCE, iconRes);

//程序入口
shortCutIntent.setAction(Intent.ACTION_MAIN);
shortCutIntent.addCategory(Intent.CATEGORY_LAUNCHER);
shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortCutIntent);

mContext.sendBroadcast(shortcut);
}

三、删除快捷方式

private void deleteShortCut(Context mContext)
{
Intent shortcut = new Intent("com.android.launcher.action.UNINSTALL_SHORTCUT");
Intent shortCutIntent = new Intent(mContext.getApplicationContext(), AppActivity.class);
shortCutIntent.setAction(Intent.ACTION_MAIN);
shortCutIntent.addCategory(Intent.CATEGORY_LAUNCHER);

// 快捷方式的名称
shortcut.putExtra(Intent.EXTRA_SHORTCUT_NAME, mContext.getString(R.string.app_name));

// 注意: ComponentName的第二个参数必须是完整的类名（包名+类名），否则无法删除快捷方式
shortcut.putExtra(Intent.EXTRA_SHORTCUT_INTENT, shortCutIntent);

mContext.sendBroadcast(shortcut);
}

四、被快捷方式启动的Activity的Intent-filter

<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>