android - 没有静态方法 canDrawOverlays

Question

我注意到有人在使用我的应用程序时报告了 Google Developer Console 记录的崩溃:

java.lang.NoSuchMethodError: No static method canDrawOverlays(Landroid/content/Context;)Z in class Landroid/provider/Settings; or its super classes (declaration of 'android.provider.Settings' appears in /system/framework/framework.jar)
    at com.pack.MainActivity.checkDrawOverlayPermission(MainActivity.java:311)
    at com.pack.MainActivity.onCreate(MainActivity.java:127)
    at android.app.Activity.performCreate(Activity.java:6033)
    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2288)
    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2397)
    at android.app.ActivityThread.access$800(ActivityThread.java:151)
    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1310)
    at android.os.Handler.dispatchMessage(Handler.java:102)
    at android.os.Looper.loop(Looper.java:135)
    at android.app.ActivityThread.main(ActivityThread.java:5268)
    at java.lang.reflect.Method.invoke(Native Method)
    at java.lang.reflect.Method.invoke(Method.java:372)
    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:902)
    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:697)

canDrawOverlays 是一种 API 23+ 方法，我是这样使用它的:

 /** code to post/handler request for permission */
    public final static int REQUEST_CODE = 100; /*(see edit II)*/

    @SuppressLint("NewApi")
    public void checkDrawOverlayPermission() {
        /** check if we already  have permission to draw over other apps */
        if (!Settings.canDrawOverlays(this)) {
            /** if not construct intent to request permission */
            Intent intent = new Intent(Settings.ACTION_MANAGE_OVERLAY_PERMISSION,
                    Uri.parse("package:" + getPackageName()));
            /** request permission via start activity for result */
            startActivityForResult(intent, REQUEST_CODE);
        }
    }

我的 MainActivity 中有这个:

checkDrawOverlayPermission();

Android 5.1 崩溃的设备

如何确保我的应用程序可以在 Android 5.1 上运行？ (API 22 及以下)谁没有 API 23 及更高版本提供的这种方法？

Answer 1

检查运行代码的设备的当前 API。如果它 >= 23，你可以使用代码

if(Build.VERSION.SDK_INT >= 23) {
     // if (!Settings.canDrawOverlays(this)) {
     //
} else {
     // another similar method that supports device have API < 23 
}