Salar Rastari Salar Rastari - 9 days ago 4
Android Question

How can I fix this error: You need to use a Theme.AppCompat theme (or descendant) with this activity

I searched all internet web sites to fix this error, but I couldn't. I just want to create AlertDialog with two button Yes and No.

This is my code:

import android.content.DialogInterface;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

public class DialogActivity extends AppCompatActivity {

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

Button btnDialog= (Button) findViewById(R.id.btnDialog);
btnDialog.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
showDialogMessage();
}
});
}

private void showDialogMessage(){

AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext());
// Add the buttons
builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// User clicked OK button
}
});
builder.setNegativeButton("NO", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
// User cancelled the dialog
}
});

AlertDialog dialog = builder.create();
dialog.show();
}
}


And this is my Style:

<resources>

<!-- Base application theme. -->
<style name="AppTheme" parent="AppTheme.Base">
<!-- Customize your theme here. -->
</style>

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




this is my style(v21):



<resources>
<!-- extend one of the Theme.AppCompat themes -->
<style name="AppTheme" parent="AppTheme.Base">
<!-- customize the color palette -->
<item name="android:colorPrimary">@color/colorPrimary</item>
<item name="android:colorPrimaryDark">@color/colorPrimaryDark</item>
<item name="android:colorAccent">@color/colorAccent</item>
<item name="android:windowTranslucentStatus">true</item>
<item name="android:colorControlHighlight">@color/colorHighLight</item>
</style>
</resources>


this is manifest:

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.saly.rastari" >
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name=".DialogActivity"
android:label="@string/title_activity_test"
android:screenOrientation="portrait" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>


When I click on Dialog button I get this error:

11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: FATAL EXCEPTION: main
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: Process: com.irannara.pda.pdaassistant, PID: 24352
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: java.lang.IllegalStateException: You need to use a Theme.AppCompat theme (or descendant) with this activity.
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.support.v7.app.AppCompatDelegateImplV7.createSubDecor(AppCompatDelegateImplV7.java:309)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.support.v7.app.AppCompatDelegateImplV7.ensureSubDecor(AppCompatDelegateImplV7.java:278)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:252)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.support.v7.app.AppCompatDialog.setContentView(AppCompatDialog.java:76)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.support.v7.app.AlertController.installContent(AlertController.java:216)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.support.v7.app.AlertDialog.onCreate(AlertDialog.java:240)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.app.Dialog.dispatchOnCreate(Dialog.java:373)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.app.Dialog.show(Dialog.java:274)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at com.irannara.pda.pdaassistant.DialogActivity.showDialogMessage(DialogActivity.java:42)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at com.irannara.pda.pdaassistant.DialogActivity.access$000(DialogActivity.java:10)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at com.irannara.pda.pdaassistant.DialogActivity$1.onClick(DialogActivity.java:21)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.view.View.performClick(View.java:4780)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.view.View$PerformClick.run(View.java:19866)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.os.Handler.handleCallback(Handler.java:739)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.os.Handler.dispatchMessage(Handler.java:95)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.os.Looper.loop(Looper.java:135)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at android.app.ActivityThread.main(ActivityThread.java:5254)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at java.lang.reflect.Method.invoke(Native Method)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at java.lang.reflect.Method.invoke(Method.java:372)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
11-02 04:36:55.941 24352-24352/? E/AndroidRuntime: at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
11-02 04:36:55.959 718-718/? E/EGL_emulation: tid 718: eglCreateSyncKHR(1209): error 0x3004 (EGL_BAD_ATTRIBUTE)


none of this links couldn't help me:



and more.

how can i fix this?

Answer

If you have another styles files in side another values folders like "values-v11", "values-v14"... Edit theme also and try to clean your app before running.

Edited: From your activity change getApplicationContext() to this:

AlertDialog.Builder builder = new AlertDialog.Builder(getApplicationContext());

to

AlertDialog.Builder builder = new AlertDialog.Builder(this);

Because the dialog also should extends the Appcompat Theme.

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