我想从我的Android应用程序启动一个已安装的包。我认为使用意图是可能的,但我没有找到一种方法来做到这一点。有没有链接,在哪里可以找到相关信息?
当前回答
试试下面的代码:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setComponent(new ComponentName("package_name", "Class_name"));
if (intent.resolveActivity(getPackageManager()) != null)
{
startActivity(intent);
}
其他回答
// in onCreate method
String appName = "Gmail";
String packageName = "com.google.android.gm";
openApp(context, appName, packageName);
public static void openApp(Context context, String appName, String packageName) {
if (isAppInstalled(context, packageName))
if (isAppEnabled(context, packageName))
context.startActivity(context.getPackageManager().getLaunchIntentForPackage(packageName));
else Toast.makeText(context, appName + " app is not enabled.", Toast.LENGTH_SHORT).show();
else Toast.makeText(context, appName + " app is not installed.", Toast.LENGTH_SHORT).show();
}
private static boolean isAppInstalled(Context context, String packageName) {
PackageManager pm = context.getPackageManager();
try {
pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES);
return true;
} catch (PackageManager.NameNotFoundException ignored) {
}
return false;
}
private static boolean isAppEnabled(Context context, String packageName) {
boolean appStatus = false;
try {
ApplicationInfo ai = context.getPackageManager().getApplicationInfo(packageName, 0);
if (ai != null) {
appStatus = ai.enabled;
}
} catch (PackageManager.NameNotFoundException e) {
e.printStackTrace();
}
return appStatus;
}
在Kotlin
fun openApplicationOrMarket(packageName: String) {
var intent = requireContext().packageManager.getLaunchIntentForPackage(packageName)
if (intent == null) {
intent = Intent(Intent.ACTION_VIEW)
intent.data = Uri.parse("market://details?id=$packageName")
}
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK)
requireContext().startActivity(intent)
}
我知道这个问题已经得到了回答,但以下是我如何实现类似的东西:
Intent intent = getPackageManager().getLaunchIntentForPackage("com.package.name");
if (intent != null) {
// We found the activity now start the activity
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
startActivity(intent);
} else {
// Bring user to the market or let them choose an app?
intent = new Intent(Intent.ACTION_VIEW);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setData(Uri.parse("market://details?id=" + "com.package.name"));
startActivity(intent);
}
更好的方法是:
public void startNewActivity(Context context, String packageName) {
Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);
if (intent != null) {
// We found the activity now start the activity
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
} else {
// Bring user to the market or let them choose an app?
intent = new Intent(Intent.ACTION_VIEW);
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
intent.setData(Uri.parse("market://details?id=" + packageName));
context.startActivity(intent);
}
}
删除重复代码:
public void startNewActivity(Context context, String packageName) {
Intent intent = context.getPackageManager().getLaunchIntentForPackage(packageName);
if (intent == null) {
// Bring user to the market or let them choose an app?
intent = new Intent(Intent.ACTION_VIEW);
intent.setData(Uri.parse("market://details?id=" + packageName));
}
intent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
context.startActivity(intent);
}
这将涵盖所有场景
1.获取包的意图
2.如果意图为空重定向用户到播放商店
3.如果打开playstore存在问题,那么它将在默认浏览器上打开。
var intent = activity!!.packageManager.getLaunchIntentForPackage("com.google.android.youtube")
if (intent == null) {
if (intent == null) {
intent = try {
Intent(Intent.ACTION_VIEW, Uri.parse("market://details?id=com.google.android.youtube"))
} catch (e: Exception) {
Intent(Intent.ACTION_VIEW, Uri.parse("https://play.google.com/store/apps/details?id=com.google.android.youtube"))
}
}
startActivity(intent)
对于Android 11 (API级别30)或更高,在AndroidManifest.xml中,
<queries>
<package android:name="com.google.android.youtube" />
<package android:name="com.example.app" />
</queries>
或者我们可以允许所有的包(不推荐)
<uses-permission android:name="android.permission.QUERY_ALL_PACKAGES" tools:ignore="QueryAllPackagesPermission" />
参考文献
Android上的包可见性过滤
声明包可见性需求
我找到了解决办法。在应用程序的清单文件中,我找到了包的名称:com.package.address和我想启动的主活动的名称:MainActivity 下面的代码启动这个应用程序:
Intent intent = new Intent(Intent.ACTION_MAIN);
intent.setComponent(new ComponentName("com.package.address","com.package.address.MainActivity"));
startActivity(intent);
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