如何找到我的 Android 设备上是否存在一个特定的软件包？

小开

您应该使用名为 getInstalledPackages()的 PackageManager函数来获取所有已安装包的列表，并搜索您感兴趣的包。请注意，包名位于 PackageInfo.packageName字段中。

小开

最佳答案

使用包名称调用以下任何方法。

import android.content.pm.PackageManager;


// ...


public boolean isPackageExisted(String targetPackage){
List<ApplicationInfo> packages;
PackageManager pm;


pm = getPackageManager();
packages = pm.getInstalledApplications(0);
for (ApplicationInfo packageInfo : packages) {
if(packageInfo.packageName.equals(targetPackage))
return true;
}
return false;
}

 import android.content.pm.PackageManager;


public boolean isPackageExisted(String targetPackage){
PackageManager pm=getPackageManager();
try {
PackageInfo info=pm.getPackageInfo(targetPackage,PackageManager.GET_META_DATA);
} catch (PackageManager.NameNotFoundException e) {
return false;
}
return true;
}

小开

Intent intent = new Intent("com.google.zxing.client.android.SCAN");
PackageManager packageManager = getPackageManager();
List<ResolveInfo> activities = packageManager.queryIntentActivities(intent, 0);
boolean isIntentSafe = activities.size() > 0;

小开

不使用 try-catch 块或迭代一堆包:

public static boolean isPackageInstalled(Context context, String packageName) {
final PackageManager packageManager = context.getPackageManager();
Intent intent = packageManager.getLaunchIntentForPackage(packageName);
if (intent == null) {
return false;
}
List<ResolveInfo> list = packageManager.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY);
return list.size() > 0;
}

小开

由于一些设备报告说“ getInstalledPackages”可能导致 TransactionToLargeException (选中这里、这里和这里) ，我认为您也应该像我下面所做的那样有一个备份。

这个问题本应该在 Android 5.1(阅读这里)上得到解决，但仍有一些人报告了这个问题。

public static List<String> getInstalledPackages(final Context context) {
List<String> result = new ArrayList<>();
final PackageManager pm = context.getPackageManager();
try {
List<PackageInfo> apps = pm.getInstalledPackages(0);
for (PackageInfo packageInfo : apps)
result.add(packageInfo.packageName);
return result;
} catch (Exception ignored) {
//we don't care why it didn't succeed. We'll do it using an alternative way instead
}
// use fallback:
BufferedReader bufferedReader = null;
try {
Process process = Runtime.getRuntime().exec("pm list packages");
bufferedReader = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line;
while ((line = bufferedReader.readLine()) != null) {
final String packageName = line.substring(line.indexOf(':') + 1);
result.add(packageName);
}
closeQuietly(bufferedReader);
process.waitFor();
} catch (Exception e) {
e.printStackTrace();
} finally {
closeQuietly(bufferedReader);
}
return result;
}


public static void closeQuietly(final Closeable closeable) {
if (closeable == null)
return;
try {
closeable.close();
} catch (final IOException e) {
}
}

小开

如果你只想使用 adb:

adb shell "pm list packages"|cut -f 2 -d ":"

它会列出所有已安装的软件包。

小开

可以使用 pm.getPackageUid ()而不是迭代 pm.getInstalledApplications ()

 boolean isPackageInstalled;
PackageManager pm = getPackageManager();
int flags = 0;
try
{
pm.getPackageUid(packageName,flags);
isPackageInstalled = true;
}
catch (final PackageManager.NameNotFoundException nnfe)
{
isPackageInstalled = false;
}
return isPackageInstalled;

小开

科特林

fun isPackageExist(context: Context, target: String): Boolean {
return context.packageManager.getInstalledApplications(0).find { info -> info.packageName == target } != null
}

编辑: 扩展功能

fun Context.isPackageExist(target: String): Boolean {
return packageManager.getInstalledApplications(0).find { info -> info.packageName == target } != null
}

小开

我们可以这样检查:

 if(getPackageManager().hasSystemFeature("android.software.webview") == true && isPackageExisted("com.google.android.webview")) {
if (Constant.isNetworkConnected(Activity.this)) {
//Your Intent
} else {
Toast.makeText(getApplicationContext(), resources.getString(R.string.internet_error), Toast.LENGTH_SHORT).show();
}
}   else
{
Constant.showDialog(Activity.this,"Please install the webview");
}
}

制作方法的包裹检查! 这个信贷去“卡维”https://stackoverflow.com/a/30708227/6209105

public boolean isPackageExisted(String targetPackage) {
List<ApplicationInfo> packages;
PackageManager pm;


pm = getPackageManager();
packages = pm.getInstalledApplications(0);
for (ApplicationInfo packageInfo : packages) {
if(packageInfo.packageName.equals(targetPackage))
{
return true;
}
}
return false;

}