Android判断应用是否存在

最新推荐文章于 2023-04-17 11:21:58 发布

转载最新推荐文章于 2023-04-17 11:21:58 发布 · 723 阅读

通过包名判断

public boolean checkBrowser(String packageName) { if (packageName == null || "".equals(packageName)) return false; try { ApplicationInfo info = getPackageManager().getApplicationInfo( packageName, PackageManager.GET_UNINSTALLED_PACKAGES); return true; } catch (NameNotFoundException e) { return false; } }

判断包中的Activity

Intent intent = new Intent(Intent.ACTION_VIEW); intent.setClassName("com.android.settings", //$NON-NLS-1$ "com.android.settings.InstalledAppDetails"); //$NON-NLS-1$ intent.putExtra("com.android.settings.ApplicationPkgName", //$NON-NLS-1$ mCurrentPkgName); List<ResolveInfo> acts = getPackageManager().queryIntentActivities( intent, 0); if (acts.size() > 0) { startActivity(intent); } else { Toast.makeText(this, getString(R.string.failed_to_resolve_activity), Toast.LENGTH_SHORT).show(); }