Question

这有什么不对，因为我无法编译到apk。错误是不能在静态上下文中使用它，但如果我必须出现对话框时将其更改为上下文应用程序冻结。

public static void mydialog(final Context context) {
    AlertDialog.Builder builder = new AlertDialog.Builder(context);
    TextView myMsg = new TextView(this);
    myMsg.setText("Central");
}

Logcat错误：

 android.view.WindowLeaked: Activity com.test.testapp.activities.MenuActivity has leaked window com.android.internal.policy.impl.PhoneWindow$DecorView{430fc9a8 V.E..... R.....I. 0,0-1048,466} that was originally added here
at android.view.ViewRootImpl.<init>(ViewRootImpl.java:457)
at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:267)
at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:69)
at android.app.Dialog.show(Dialog.java:288)
at com.dialog.dialog.showDialog(RateThisApp.java:229)
at com.dialog.dialog.showDialogIfNeeded(RateThisApp.java:108)
at com.test.testapp.activities.MenuActivity.onCreate(MenuActivity.java:47)
at android.app.Activity.performCreate(Activity.java:5426)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2269)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2363)
at android.app.ActivityThread.access$900(ActivityThread.java:161)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1265)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:157)
at android.app.ActivityThread.main(ActivityThread.java:5356)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1265)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1081)
at dalvik.system.NativeStart.main(Native Method)

Answer 1

static方法与类的任何特定实例无关。它是与类本身相关的方法。因此this在静态方法中没有意义 - 没有要引用的类的实例。

如果此方法位于Context的类中（例如Application子类或Activity），则可以删除static修饰符并使用{ {1}}就像你已经尝试过的那样。

使用TextView的静态对话框

1 个答案: