从一个APP打开别人的APP ，提示 not exported from uid

Question

注意：我是用自己的APP打开**别人的APP**。我遇到的问题是自己的APP不能打开手机里面已经装好的QQ阅读。我不能修改QQ阅读的任何代码，所以"exported ="true"“可能不适用于我这个情况。在此感谢所有愿意为我这个问题花时间的大大。

下面是错误提示：**Permission Denial**: starting Intent { act=android.intent.action.MAIN cat=[android.intent.category.LAUNCHER] cmp=com.qq.reader/.widget.picbrowser.PictureActivity } from ProcessRecord{3823559b 16851:com.pax.market.android.app/u0a322} (pid=16851, uid=10322) **not exported from uid **10324

下面是我启动别人APP的代码

public static void openApp(Activity activity,String packageName) {
  PackageInfo pi;
  try {
pi = activity.getPackageManager().getPackageInfo(packageName, 0);
Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
resolveIntent.setPackage(pi.packageName);
PackageManager pManager = activity.getPackageManager();
List apps = pManager.queryIntentActivities(
        resolveIntent, 0);

ResolveInfo ri = (ResolveInfo) apps.iterator().next();
if (ri != null) {
    packageName = ri.activityInfo.packageName;
    String className = ri.activityInfo.name;
    Intent intent = new Intent(Intent.ACTION_MAIN);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);
    ComponentName cn = new ComponentName(packageName, className);
    intent.setComponent(cn);
    activity.startActivity(intent);
}
  } catch (NameNotFoundException e) {
Log.e(TAG, "Package Name not found: " + e.getMessage() + ", App is not installed.");
  } catch (SecurityException e){
SnackBar.newBuilder().activity(activity).
        text(activity.getString(R.string.permission_denied_to_open))
        .build().show();
}
}         

Answer 1

List apps = pManager.queryIntentActivities(resolveIntent, 0);查询出的符合条件的activity是有可能是多个的。
对于com.qq.reader来说可查询出两个：
com.qq.reader.widget.picbrowser.PictureActivity
com.qq.reader.activity.SplashActivity
其中PictureActivity是不能被启动的，因为它的exported=false,但是SplashActivity是可以启动的。
代码修改了一下，是可以启动qqreader的，是从SpalshActivity启动的。

public static void  openApp(Activity activity,String packageName) {
    PackageInfo pi;
    try {
        pi = activity.getPackageManager().getPackageInfo(packageName, 0);
        Intent resolveIntent = new Intent(Intent.ACTION_MAIN, null);
        resolveIntent.setPackage(pi.packageName);
        PackageManager pManager = activity.getPackageManager();
        List<ResolveInfo> apps = pManager.queryIntentActivities(
                resolveIntent, 0);
        for(ResolveInfo app: apps){

            Log.d(TAG,String.format("%s %s",app.activityInfo.packageName,app.activityInfo.name));
            packageName = app.activityInfo.packageName;
            String className = app.activityInfo.name;
            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            ComponentName cn = new ComponentName(packageName, className);
            intent.setComponent(cn);
            try {
                activity.startActivity(intent);
            }catch(SecurityException e){
                e.printStackTrace();
            }
        }
      /*  ResolveInfo ri = (ResolveInfo) apps.iterator().next();
        if (ri != null) {
            packageName = ri.activityInfo.packageName;
            String className = ri.activityInfo.name;
            Intent intent = new Intent(Intent.ACTION_MAIN);
            intent.addCategory(Intent.CATEGORY_LAUNCHER);
            ComponentName cn = new ComponentName(packageName, className);
            intent.setComponent(cn);
            activity.startActivity(intent);
        }*/
    } catch (PackageManager.NameNotFoundException e) {
        Log.e(TAG, "Package Name not found: " + e.getMessage() + ", App is not installed.");
    } catch (SecurityException e){
        SnackBar.newBuilder().activity(activity).
                text(activity.getString(R.string.permission_denied_to_open))
                .build().show();
    }
}