Question

我有一个Android布局用于显示关于应用程序＆＃34;使用＆＃34;关闭＆＃34;的警告对话框按钮。它有一个以粗体为中心的标题，应用版本和开发者名称。一切看起来都不错，除了标题上方有一个非常明显的边距/填充，我无法删除那个空白区域。

这是布局：

<?xml version="1.0" encoding="utf-8"?>
<ScrollView android:orientation="vertical" android:scrollbars="none" android:layout_width="fill_parent" android:layout_height="wrap_content" xmlns:android="http://schemas.android.com/apk/res/android">
  <LinearLayout android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginRight="6.0dp" xmlns:android="http://schemas.android.com/apk/res/android">

    <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical" android:layout_gravity="center">
      <TextView android:textSize="16.0dip" android:textStyle="bold" android:textColor="#ffffffff" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="6.0dip" android:layout_marginRight="6.0dip" android:layout_marginBottom="10.0dip" android:text="@string/app_name" />
    </LinearLayout>

    <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="horizontal">
        <TextView android:textSize="14.0dip" android:textColor="#ffffffff" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="6.0dip" android:layout_marginTop="0.0dip" android:text="@string/version_text" />
        <TextView android:textSize="14.0dip" android:textColor="#ffffffff" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="6.0dip" android:layout_marginTop="0.0dip" android:text="@string/app_version" />
    </LinearLayout>

    <LinearLayout android:layout_width="wrap_content" android:layout_height="wrap_content" android:orientation="vertical">
      <TextView android:textSize="14.0dip" android:textColor="#ffffffff" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginLeft="6.0dip" android:text="@string/about_developer" />
    </LinearLayout>

    <LinearLayout android:gravity="center" android:orientation="vertical" android:layout_width="fill_parent" android:layout_height="wrap_content" android:layout_marginTop="10.0dip" xmlns:android="http://schemas.android.com/apk/res/android">
      <Button android:id="@id/close_btn" android:layout_width="110.0dip" android:layout_height="44.0dip" android:layout_marginTop="4.0dip" android:layout_marginBottom="4.0dip" android:text="@string/about_close" />
    </LinearLayout>

  </LinearLayout>
</ScrollView>

以下是它的内容：

我尝试在许多代码中添加android:layout_marginTop="-10.0dip"属性，并搜索SO以查找类似问题，但我无法找到它。如果有人告诉我如何解决这个问题，我会感激不尽。

Answer 1

您可以尝试使用DialogFragment使用自定义视图制作自己的对话框并设置此

dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);

或者只是尝试使用简单的Dialog，而不是像这样的AlertDialog

Dialog dialog = new Dialog(theContext);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(yourCustomView);
dialog.show();

Answer 2

使用RelativeLayout代替（下面的代码需要调整以满足您的需求，但它提供了一般布局）：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/activity_main"
    android:layout_width="match_parent"
    android:layout_height="match_parent">

<TextView
    android:text="App Name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentTop="true"
    android:layout_centerHorizontal="true"
    android:id="@+id/textView" />

<TextView
    android:text="Version 1.0"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/textView"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="29dp"
    android:id="@+id/textView2" />

<TextView
    android:text="Developed by Name"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/textView2"
    android:layout_centerHorizontal="true"
    android:layout_marginTop="23dp"
    android:id="@+id/textView3" />

<Button
    android:text="Close"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_below="@+id/textView3"
    android:layout_alignLeft="@+id/textView2"
    android:layout_alignStart="@+id/textView2"
    android:layout_marginTop="42dp"
    android:id="@+id/button2" />
</RelativeLayout>

您也可以像其他人提到的那样使用Dialog。

编辑：

您可以尝试使用自定义Dialog，然后使用DialogFragment。要调用Dialog，请使用：new CustomDialogFragment().show(getSupportFragmentManager(), "mydialog");

然后创建一个扩展DialogFragment的新类，并使用类似的东西：

public class DonateDialogFragment extends DialogFragment implements View.OnClickListener
{

private AlertDialog dialog;

public interface CustomDialogListener {
    void buttonClicked();
}

@Override
public void onAttach(Activity activity) {
    super.onAttach(activity);
    if (!(activity instanceof CustomDialogListener)) {
        throw new ClassCastException(activity.toString() + " must implement CustomDialogListener");
    }
}

@Override
public Dialog onCreateDialog(Bundle savedInstanceState) {
    AlertDialog.Builder customDialogMain = new AlertDialog.Builder(getActivity());
    donateDialogMain.setCancelable(true);
    LayoutInflater inflater = getActivity().getLayoutInflater();

    View view = inflater.inflate(R.layout.--YOUR-CUSTOM-DIALOG-LAYOUT-HERE--, null);

    view.findViewById(R.id.close_btn).setOnClickListener(this);

    customDialogMain.setView(view);

    dialog = customDialogMain.show();
    return dialog;
}

public void onClick(View v) {
    // does something very interesting
    switch (v.getId())
    {
        case R.id.close_btn:
            ((CustomDialogListener) getActivity()).buttonClicked();
            dialog.dismiss();
            break;
    }
}

}

Answer 3

您可以将此样式直接用于style.xml

<style name="Theme.UserDialog.AppCompat" parent="Theme.AppCompat.Dialog">
    <item name="android:windowNoTitle">true</item>
    <item name="android:windowFullscreen">true</item>
    <item name="android:windowIsFloating">true</item>
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
    <item name="android:windowContentOverlay">@null</item>
    <item name="android:windowCloseOnTouchOutside">true</item>
    <item name="android:windowAnimationStyle">@android:style/Animation.Dialog</item>
    <item name="android:windowSoftInputMode">stateUnspecified|adjustPan</item>
    <item name="android:windowBackground">@android:color/white</item>
    <item name="android:minWidth">600dp</item>
</style>

将此样式应用于要设置为警告对话框的活动类

android:theme="@style/Theme.UserDialog.AppCompat"

并使用Intent开始活动，如

Intent activity= new Intent(this, AlertActivity.class);
startActivity(activity);

Answer 4

为AlertDialog创建样式：

export default class SuperScreen extends Component {
  constructor(props) {
    super(props);
    this.state = {
      pushNotification: null,
      visible: false
    };

    OneSignal.init("00000000", {
      kOSSettingsKeyAutoPrompt: true
    });

    OneSignal.inFocusDisplaying(0);
    OneSignal.enableVibrate(true);
    OneSignal.enableSound(true);

    OneSignal.addEventListener("received", this.onReceived);
    OneSignal.addEventListener("opened", this.onOpened);
    OneSignal.addEventListener("ids", this.onIds);
  }

  componentWillUnmount() {
    OneSignal.removeEventListener("received", this.onReceived);
    OneSignal.removeEventListener("opened", this.onOpened);
    OneSignal.removeEventListener("ids", this.onIds);
  }

  onReceived = notification => {
    //App is opened!
    console.log("Notification received: ", notification);

    this.setState({
      pushNotification: notification,
      visible: true
    });

    if (notification.payload.notificationID != null) {
      firebase.analytics().logEvent("Popup_Link_Button", {
        notificationID: notification.payload.notificationID,
        clicked: true
      });
    }
  };

  onOpened = openResult => {
    //App either is closed or running in background
    //Android:  Closed: Showing       Background: Not Showing
    //iOS:      Closed: Not Showing   Background: Showing)

    console.log("openResult: ", openResult);

    this.setState({
      pushNotification: openResult.notification,
      visible: true
    });

    if (openResult.notification.payload.notificationID != null) {
      firebase.analytics().logEvent("Popup_Link_Button", {
        notificationID: openResult.notification.payload.notificationID,
        clicked: true
      });
    }
  };

  onIds = device => {
    console.log("Device info: ", device);
  };

  getPopup() {
    if (
      this.state.pushNotification != null &&
      this.state.pushNotification.payload.additionalData != null &&
      this.state.pushNotification.payload.additionalData.showPopup != null &&
      this.state.pushNotification.payload.additionalData.showPopup == "true"
    ) {
      var actionButtons = null;

      if (
        this.state.pushNotification.payload.additionalData.openLink != null &&
        this.state.pushNotification.payload.additionalData.buttonText != null
      ) {
        actionButtons = [
          <DialogButton
            text="Ok"
            key={0}
            onPress={() => {
              this.setState({ visible: false });
              firebase.analytics().logEvent("Popup_Link_Button", {
                notificationID: this.state.pushNotification.payload
                  .notificationID,
                opened: false
              });
            }}
          />
        ];

        actionButtons.push(
          <DialogButton
            text={this.state.pushNotification.payload.additionalData.buttonText}
            key={1}
            onPress={() => {
              this.openLink(
                this.state.pushNotification.payload.additionalData.openLink
              );
              this.setState({ visible: false });
              firebase.analytics().logEvent("Popup_Link_Button", {
                notificationID: this.state.pushNotification.payload
                  .notificationID,
                link: this.state.pushNotification.payload.additionalData
                  .openLink,
                opened: true
              });
            }}
          />
        );
      } else {
        actionButtons = [
          <DialogButton
            text="Ok"
            key={0}
            onPress={() => {
              this.setState({ visible: false });
              firebase.analytics().logEvent("Popup_Link_Button", {
                popupID: this.state.pushNotification.payload.notificationID,
                opened: false
              });
            }}
          />
        ];
      }

      return (
        <Dialog
          visible={this.state.visible}
          dialogTitle={
            <DialogTitle
              title={
                this.state.pushNotification == null
                  ? ""
                  : this.state.pushNotification.payload.title
              }
            />
          }
          dialogAnimation={
            new SlideAnimation({
              slideFrom: "bottom"
            })
          }
          dialogStyle={{ marginLeft: 20, marginRight: 20 }}
          actions={actionButtons}
        >
          <DialogContent>
            <Text />
            <Text>
              {this.state.pushNotification == null
                ? ""
                : this.state.pushNotification.payload.body}
            </Text>
          </DialogContent>
        </Dialog>
      );
    }
  }

在创建AlertDialog时定义此样式

AlertDialog.Builder builder =新的AlertDialog.Builder（container.getContext（），R.style.AlertDialogCustom）;

删除顶部的Android警告对话框空白区域

4 个答案: