<分区>
我正在使用 java 在我的应用程序中集成 admob 广告，但得到了这个
cannot find symbol mInterstitialAd = new InterstitialAd(this); symbol: variable mInterstitialAd location: class Ads
.请检查 util/Ads.java 和 AndroidManifest.xml 文件并帮助我修复它。我无法解决这个问题。
util/Ads.java
package com.indiapps.documentscanner.util;
import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.util.Log;
import com.google.android.gms.ads.InterstitialAd;
public class Ads {
public static void showAds(Context context) {
SharedPreferences sharedPreferences = PreferenceManager.getDefaultSharedPreferences(context);
long currentTimeMillis = System.currentTimeMillis();
long lastTime = sharedPreferences.getLong("lastTime", 0);
mInterstitialAd = new InterstitialAd(this);
mInterstitialAd.setAdUnitId("ca-app-pub-3940256099942544/1033173712");
if (currentTimeMillis - lastTime > 60000) {
if (mInterstitialAd.isLoaded()) {
mInterstitialAd.show();
}
SharedPreferences.Editor editor = sharedPreferences.edit();
editor.putLong("lastTime", currentTimeMillis);
editor.apply();
Log.d("AAA","showAds");
}
}
}
AndroidManifest.xml
<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
package="com.indiapps.documentscanner">
<uses-permission android:name="android.permission.CAMERA" />
<uses-feature
android:name="android.hardware.camera"
android:required="false" />
<uses-feature
android:name="android.hardware.camera.autofocus"
android:required="false" />
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
<uses-permission android:name="android.permission.INTERNET" />
<application
android:requestLegacyExternalStorage="true"
android:name="com.MainApplication"
android:allowBackup="true"
android:hardwareAccelerated="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:largeHeap="true"
android:supportsRtl="true"
android:theme="@style/AppTheme"
tools:ignore="GoogleAppIndexingWarning">
<meta-data
android:name="com.google.android.gms.ads.APPLICATION_ID"
android:value="@string/admod_app_id"/>
<!-- HUNGDH -->
<activity
android:name="com.indiapps.documentscanner.camscanner.MainActivity"
android:label="@string/app_name"
android:theme="@style/AppTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<activity
android:name="com.google.android.gms.ads.AdActivity"
android:configChanges="keyboard|keyboardHidden|orientation|screenLayout|uiMode|screenSize|smallestScreenSize"
android:noHistory="true" />
<activity
android:name="com.facebook.ads.AudienceNetworkActivity"
android:configChanges="keyboardHidden|orientation|screenSize"
android:noHistory="true" />
<meta-data
android:name="com.google.android.gms.ads.AD_MANAGER_APP"
android:value="true" />
<provider
android:name="androidx.core.content.FileProvider"
android:authorities="${applicationId}.provider"
android:exported="false"
android:grantUriPermissions="true">
<meta-data
android:name="android.support.FILE_PROVIDER_PATHS"
android:resource="@xml/file_paths" />
</provider>
<activity
android:name="com.indiapps.documentscanner.camscanner.MyPDFActivity"
android:label="@string/my_pdf"
android:theme="@style/AppTheme" />
<activity
android:name="com.indiapps.documentscanner.camscanner.FilterImageActivity"
android:label="@string/filter_image"
android:theme="@style/AppTheme" />
<activity
android:name="com.indiapps.documentscanner.camscanner.KnifeActivity"
android:theme="@style/AppTheme"
android:windowSoftInputMode="adjustResize|stateHidden" />
<activity
android:name="com.indiapps.documentscanner.camscanner.MySettingsActivity"
android:label="@string/action_settings"
android:theme="@style/AppTheme" />
<!-- DOCUMENT SCANNER -->
<activity
android:name="com.gpaddyv1.documentscanner.activities.SimpleDocumentScannerActivity"
android:label="@string/from_gallery"
android:theme="@style/AppTheme" />
<!-- IMAGE TO PDF -->
<activity
android:name="com.gun0912.tedpicker.ImagePickerActivity"
android:screenOrientation="portrait"
android:theme="@style/AppTheme_picker" />
<!-- OPEN NOTE SCANNER -->
<activity
android:name=".OpenNoteScannerActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/title_activity_open_note_scanner"
android:screenOrientation="portrait"
android:theme="@style/FullscreenTheme.NoActionBar">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
<intent-filter>
<action android:name="android.media.action.IMAGE_CAPTURE" />
<category android:name="android.intent.category.DEFAULT" />
</intent-filter>
</activity>
<activity
android:name=".GalleryGridActivity"
android:configChanges="orientation|keyboardHidden|screenSize"
android:label="@string/my_gallery"
android:screenOrientation="portrait"
android:theme="@style/FullscreenTheme">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
</intent-filter>
</activity>
<activity
android:name=".FullScreenViewActivity"
android:theme="@style/FullscreenTheme" />
<activity
android:name=".SettingsActivity"
android:label="@string/settings"
android:theme="@style/AppTheme" />
<!-- PHOTO EDITOR -->
<activity android:name="com.gpaddyv1.documentscanner.process.view.ProcessImageActivity" />
<activity android:name="com.joshuabutton.queenscanner.sign.view.SignActivity" />
<activity android:name="com.joshuabutton.queenscanner.process.view.CombineBitMapActivity" />
<activity android:name="com.gpaddyv1.documentscanner.document.DocumentActivity" />
<activity android:name="com.joshuabutton.queenscanner.handle.HandleActivity" />
<activity android:name="com.indiapps.documentscanner.listdoc.DocsActivity" />
<activity
android:name=".AccountActivity"
android:theme="@style/AppTheme.NoActionBar1">
</activity>
</application>
</manifest>