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[英]Titanium: Check if application installed on the device (android)
[英]Check if application is installed - Android
我正在嘗試從 Google Play 安裝應用程序。 我可以理解,在打開 Google Play 商店 URL 時,它會打開 Google Play,當我按下后退按鈕時,活動恢復。
Intent marketIntent = new Intent(Intent.ACTION_VIEW, Uri.parse(appURL));
marketIntent.addFlags(Intent.FLAG_ACTIVITY_NO_HISTORY | Intent.FLAG_ACTIVITY_CLEAR_WHEN_TASK_RESET);
startActivity(marketIntent);
當我回到活動中時,我嘗試調用此onResume()
來檢查應用程序是否已安裝,但我收到錯誤消息:
@Override
protected void onResume() {
super.onResume();
boolean installed = false;
while (!installed) {
installed = appInstalledOrNot(APPPACKAGE);
if (installed) {
Toast.makeText(this, "App installed", Toast.LENGTH_SHORT).show();
}
}
}
private boolean appInstalledOrNot(String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
}
catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed ;
}
錯誤如下:
E / AndroidRuntime(796):java.lang.RuntimeException:無法啟動活動ComponentInfo {com.example.appinstaller/com.example.appinstaller.MainActivity}:android.content.ActivityNotFoundException:找不到處理Intent的活動{act = android .intent.action.VIEW dat=market://details?id=com.package.name flg=0x40080000 }
我猜活動是onPause()
。 有沒有更好的方法來實現它? 我正在嘗試檢查該應用程序是否已完成安裝。
試試這個:
private boolean isPackageInstalled(String packageName, PackageManager packageManager) {
try {
packageManager.getPackageInfo(packageName, 0);
return true;
} catch (PackageManager.NameNotFoundException e) {
return false;
}
}
它嘗試獲取有關您傳入的名稱的包的信息。如果失敗,如果拋出NameNotFoundException
,則意味着沒有安裝具有該名稱的包,因此我們返回false
。
請注意,我們傳入的是PackageManager
而不是Context
,因此該方法的使用更加靈活,並且不會違反Demeter 定律。 只要您有PackageManager
實例,您就可以在不訪問Context
實例的情況下使用該方法。
像這樣使用它:
public void someMethod() {
// ...
PackageManager pm = context.getPackageManager();
boolean isInstalled = isPackageInstalled("com.somepackage.name", pm);
// ...
}
注意:從 Android 11 (API 30) 開始,您可能需要在清單中聲明<queries>
,具體取決於您要查找的包。 查看文檔以獲取更多信息。
自 Android 11(API 級別 30)起,大多數用戶安裝的應用程序默認不可見。 在您的清單中,您必須靜態聲明您將獲取有關哪些應用程序的信息,如下所示:
<manifest>
<queries>
<!-- Explicit apps you know in advance about: -->
<package android:name="com.example.this.app"/>
<package android:name="com.example.this.other.app"/>
</queries>
...
</manifest>
然后,@RobinKanters 的回答有效:
private boolean isPackageInstalled(String packageName, PackageManager packageManager) {
try {
packageManager.getPackageInfo(packageName, 0);
return true;
} catch (PackageManager.NameNotFoundException e) {
return false;
}
}
// ...
// This will return true on Android 11 if the app is installed,
// since we declared it above in the manifest.
isPackageInstalled("com.example.this.app", pm);
// This will return false on Android 11 even if the app is installed:
isPackageInstalled("another.random.app", pm);
在此處了解更多信息:
Robin Kanters 的回答是正確的,但它會檢查已安裝的應用程序,無論它們處於啟用還是禁用狀態。
我們都知道應用程序可以安裝但被用戶禁用,因此無法使用。
這會檢查已安裝和啟用的應用程序:
public static boolean isPackageInstalled(String packageName, PackageManager packageManager) {
try {
return packageManager.getApplicationInfo(packageName, 0).enabled;
}
catch (PackageManager.NameNotFoundException e) {
return false;
}
}
您可以將此方法放在像Utils
這樣的類中,並使用以下方法在任何地方調用它:
boolean isInstalled = Utils.isPackageInstalled("com.package.name", context.getPackageManager())
更快的解決方案:
private boolean isPackageInstalled(String packagename, PackageManager packageManager) {
try {
packageManager.getPackageGids(packagename);
return true;
} catch (NameNotFoundException e) {
return false;
}
}
getPackageGids
是更便宜getPackageInfo
,所以它工作得更快。
Run 10000 on API 15
Exists pkg:
getPackageInfo: nanoTime = 930000000
getPackageGids: nanoTime = 350000000
Not exists pkg:
getPackageInfo: nanoTime = 420000000
getPackageGids: nanoTime = 380000000
Run 10000 on API 17
Exists pkg:
getPackageInfo: nanoTime = 2942745517
getPackageGids: nanoTime = 2443716170
Not exists pkg:
getPackageInfo: nanoTime = 2467565849
getPackageGids: nanoTime = 2479833890
Run 10000 on API 22
Exists pkg:
getPackageInfo: nanoTime = 4596551615
getPackageGids: nanoTime = 1864970154
Not exists pkg:
getPackageInfo: nanoTime = 3830033616
getPackageGids: nanoTime = 3789230769
Run 10000 on API 25
Exists pkg:
getPackageInfo: nanoTime = 3436647394
getPackageGids: nanoTime = 2876970397
Not exists pkg:
getPackageInfo: nanoTime = 3252946114
getPackageGids: nanoTime = 3117544269
注意:這在某些虛擬空間中不起作用。 它們可能違反 Android API 並始終返回一個數組,即使沒有具有該包名稱的應用程序。
在這種情況下,請使用getPackageInfo
。
試試這個:
public static boolean isAvailable(Context ctx, Intent intent) {
final PackageManager mgr = ctx.getPackageManager();
List<ResolveInfo> list =
mgr.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
return list.size() > 0;
}
你可以在 Kotlin extentions.kt
使用它
fun Context.isPackageInstalled(packageName: String): Boolean {
return try {
packageManager.getPackageInfo(packageName, 0)
true
} catch (e: PackageManager.NameNotFoundException) {
false
}
}
用法
context.isPackageInstalled("com.somepackage.name")
在Android 11之后,您需要在 Manifest of Application 的<queries>
中添加 package names。
如果清單中沒有<queries>
, context.getPackageManager().getApplicationInfo
總是有異常( System.err: android.content.pm.PackageManager$NameNotFoundException )
檢查參考:鏈接
例子:
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android">
<queries>
<package android:name="com.xxx.yyy" />
</queries>
<application></application>
</manifest>
Java
public boolean applicationIsInstall(Context context , String packageName){
try {
context.getPackageManager().getApplicationInfo(packageName, 0);
return true;
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
return false;
}
}
科爾廷
fun applicationIsInstall(context: Context, packageName: String): Boolean {
return try {
context.packageManager.getApplicationInfo(packageName, 0)
true
} catch (e: PackageManager.NameNotFoundException) {
e.printStackTrace()
false
}
}
如果你想在沒有try catch塊的情況下嘗試,可以使用下面的方法,創建一個意圖並設置你要驗證的應用程序的包
val intent = Intent(Intent.ACTION_VIEW)
intent.data = uri
intent.setPackage("com.example.packageofapp")
並調用以下方法來檢查應用程序是否已安裝
fun isInstalled(intent:Intent) :Boolean{
val list = context.packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY)
return list.isNotEmpty()
}
那些正在尋找 Kotlin 解決方案的人可以使用這種方法,
在這里我分享了完整的代碼,並且還處理了啟用狀態。 檢查 Android Kotlin 中是否安裝了應用程序
fun isAppInstalled(packageName: String, context: Context): Boolean {
return try {
val packageManager = context.packageManager
packageManager.getPackageInfo(packageName, 0)
true
} catch (e: PackageManager.NameNotFoundException) {
false
}
}
private boolean isAppExist() {
PackageManager pm = getPackageManager();
try {
PackageInfo info = pm.getPackageInfo("com.facebook.katana", PackageManager.GET_META_DATA);
} catch (PackageManager.NameNotFoundException e) {
return false;
}
return true;
}
if (isFacebookExist()) {showToast(" Facebook is install.");}
else {showToast(" Facebook is not install.");}
isFakeGPSInstalled = Utils.isPackageInstalled(Utils.PACKAGE_ID_FAKE_GPS, this.getPackageManager());
//檢查包安裝的方法真/假
public static boolean isPackageInstalled(String packageName, PackageManager packageManager) {
boolean found = true;
try {
packageManager.getPackageInfo(packageName, 0);
} catch (PackageManager.NameNotFoundException e) {
found = false;
}
return found;
}
@Override
protected void onResume() {
super.onResume();
boolean installed = false;
while (!installed) {
installed = appInstalledOrNot (APPPACKAGE);
if (installed) {
Toast.makeText(this, "App installed", Toast.LENGTH_SHORT).show ();
}
}
}
private boolean appInstalledOrNot (String uri) {
PackageManager pm = getPackageManager();
boolean app_installed = false;
try {
pm.getPackageInfo(uri, PackageManager.GET_ACTIVITIES);
app_installed = true;
} catch (PackageManager.NameNotFoundException e) {
app_installed = false;
}
return app_installed;
}
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