您需要在此活动中使用 Theme.AppCompat 主题(或后代).更改为 Theme.AppCompat 会导致其他错误 [英] You need to use a Theme.AppCompat theme (or descendant) with this activity. Change to Theme.AppCompat causes other error

问题描述

我在我的应用程序中使用 appcompat v22.1.0 并使用工具栏.当我使用 Theme.AppCompat.Light.NoActionBar 时，一切都很好.当我开始实施 AlertDialog 时，它会产生如下错误:

I use appcompat v22.1.0 in my App and use Toolbar. Everything was fine when I use Theme.AppCompat.Light.NoActionBar. When I start implement AlertDialog, it produce error like this:

java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
        at android.support.v7.app.AppCompatDelegateImplBase.onCreate(AppCompatDelegateImplBase.java:113)
        at android.support.v7.app.AppCompatDelegateImplV7.onCreate(AppCompatDelegateImplV7.java:146)
        at android.support.v7.app.AppCompatDialog.<init>(AppCompatDialog.java:47)
        at android.support.v7.app.AlertDialog.<init>(AlertDialog.java:92)
        at android.support.v7.app.AlertDialog$Builder.create(AlertDialog.java:882)
        at com.ramabmtr.map.findingmoo.MainActivity.onOptionsItemSelected(MainActivity.java:216)
        at android.app.Activity.onMenuItemSelected(Activity.java:2572)
        at android.support.v4.app.FragmentActivity.onMenuItemSelected(FragmentActivity.java:353)
        at android.support.v7.app.AppCompatActivity.onMenuItemSelected(AppCompatActivity.java:144)
        at android.support.v7.internal.view.WindowCallbackWrapper.onMenuItemSelected(WindowCallbackWrapper.java:99)
        at android.support.v7.internal.view.WindowCallbackWrapper.onMenuItemSelected(WindowCallbackWrapper.java:99)
        at android.support.v7.internal.app.ToolbarActionBar$2.onMenuItemClick(ToolbarActionBar.java:74)
        at android.support.v7.widget.Toolbar$1.onMenuItemClick(Toolbar.java:164)
        at android.support.v7.widget.ActionMenuView$MenuBuilderCallback.onMenuItemSelected(ActionMenuView.java:740)
        at android.support.v7.internal.view.menu.MenuBuilder.dispatchMenuItemSelected(MenuBuilder.java:802)
        at android.support.v7.internal.view.menu.MenuItemImpl.invoke(MenuItemImpl.java:153)
        at android.support.v7.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:949)
        at android.support.v7.internal.view.menu.MenuBuilder.performItemAction(MenuBuilder.java:939)
        at android.support.v7.widget.ActionMenuView.invokeItem(ActionMenuView.java:598)
        at android.support.v7.internal.view.menu.ActionMenuItemView.onClick(ActionMenuItemView.java:139)
        at android.view.View.performClick(View.java:4084)
        at android.view.View$PerformClick.run(View.java:16989)
        at android.os.Handler.handleCallback(Handler.java:615)
        at android.os.Handler.dispatchMessage(Handler.java:92)
        at android.os.Looper.loop(Looper.java:137)
        at android.app.ActivityThread.main(ActivityThread.java:4812)
        at java.lang.reflect.Method.invokeNative(Native Method)
        at java.lang.reflect.Method.invoke(Method.java:511)
        at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:792)
        at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:559)
        at dalvik.system.NativeStart.main(Native Method)

基于该错误，我将主题更改为 Theme.AppCompat 并输入:

Based on that error, I change my theme to Theme.AppCompat and put this:

<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>

我的主题.但它产生了同样的错误.

to my theme. But it produce the same error.

Style.xml(旧)

<resources>
<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
</style>
</resources>

Style.xml(新)

<resources>
<style name="AppTheme" parent="Theme.AppCompat">
    <item name="windowActionBar">false</item>
    <item name="windowNoTitle">true</item>
    <item name="colorPrimary">@color/colorPrimary</item>
    <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
</style>
</resources>

有人知道怎么解决吗??

Anyone knows how to fix it??

MainActivity.java

package com.ramabmtr.map.findingmoo;

import android.content.DialogInterface;
import android.graphics.Typeface;
import android.os.Bundle;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

private Toolbar toolbar;
private TextView toolbarTitle;

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    toolbar = (Toolbar) findViewById(R.id.toolbar);
    setSupportActionBar(toolbar);
    getSupportActionBar().setDisplayShowTitleEnabled(false);

    Typeface myTypeface = Typeface.createFromAsset(getAssets(), "fonts/panpizza.ttf");
    toolbarTitle = (TextView) findViewById(R.id.toolbar_title);
    toolbarTitle.setTypeface(myTypeface);

    AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext());
    builder.setTitle(R.string.filter_title);
    builder.setMessage("test");
    builder.setPositiveButton(R.string.ok_button, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int id) {
            dialog.dismiss();
        }
    });
    builder.setNegativeButton(R.string.cancel_button, new DialogInterface.OnClickListener() {
        @Override
        public void onClick(DialogInterface dialog, int id) {
            dialog.dismiss();
        }
    });
    AlertDialog dialog = builder.create();
    dialog.show();
}
}

推荐答案

基本上你的 Activity 使用的是 Toolbar(它取代了 Action Bar)，所以你需要为没有 Action Bar 的 Activity 使用样式，比如 Theme.AppCompat.Light.NoActionBar.如果您有自己的对话框风格，那么您需要继承适当的 AppCompat 主题.

Basically your Activity is using Toolbar (which replaces Action Bar) so you need to use style for the Activity that has no Action Bar like Theme.AppCompat.Light.NoActionBar. If you have your own style for dialog then you need to inherit the proper AppCompat theme.

<style name="myDialog" parent="Theme.AppCompat.Dialog">
    <item name="android:windowNoTitle">true</item>
    ...
</style>

AlertDialog.Builder builder = new AlertDialog.Builder(new ContextThemeWrapper(this, R.style.myDialog));

这篇关于您需要在此活动中使用 Theme.AppCompat 主题(或后代).更改为 Theme.AppCompat 会导致其他错误的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！