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。当我启动implementAlertDialog
时,它会产生如下错误:
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)
基于这个错误,我将主题更改为
Theme.AppCompat
,并将其设置为:<item name="windowActionBar">false</item>
<item name="windowNoTitle">true</item>
我的主题。但也会产生同样的错误。
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>
有人知道怎么修吗??
main活动.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();
}
}
最佳答案
基本上,您的活动是使用工具栏(它代替了操作栏),因此您需要对没有操作栏的活动使用样式,比如Theme.AppCompat.Light.NoActionBar
。
如果您有自己的对话框样式,则需要继承适当的appcompat主题。
<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));
关于android - 您需要在此 Activity 中使用Theme.AppCompat主题(或后代)。更改为Theme.AppCompat会导致其他错误,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/49878675/