InMobi横幅广告加载失败排查：新手集成问题求助

Hey there! Let's break down the issues in your code and walk through key checks to get your InMobi banner ad up and running.

1. Fix the Banner Instance & Layout Attachment Bug #

Your code has a critical mistake here: you first fetch the InMobiBanner from your layout with findViewById(R.id.banner), but immediately overwrite it with a new instance created via new InMobiBanner(...). Worse, this new instance is never added to your activity's layout—so the ad view doesn't exist on the screen at all, which is why your Toast callbacks aren't triggering.

Here's how to fix it:

Option 1: Use the Banner Defined in Your XML Layout #

If you already added an InMobiBanner to your activity_main.xml, stick with that instance:

private void setUpBannerAd(){
    InMobiSdk.init(MainActivity.this, MY_ID);
    // Use the banner from your layout directly—don't reinitialize it
    InMobiBanner bannerAd = findViewById(R.id.banner);
    
    bannerAd.setListener(new InMobiBanner.BannerAdListener() {
        @Override
        public void onAdLoadSucceeded(InMobiBanner inMobiBanner) {
            Toast.makeText(MainActivity.this, "success", Toast.LENGTH_SHORT).show();
        }
        @Override
        public void onAdLoadFailed(InMobiBanner inMobiBanner, InMobiAdRequestStatus inMobiAdRequestStatus) {
            Toast.makeText(MainActivity.this, "fail: " + inMobiAdRequestStatus.getMessage(), Toast.LENGTH_SHORT).show();
        }
        // Implement other required callback methods...
    });
    
    bannerAd.load();
}

Option 2: Create a Dynamic Banner (No XML Definition) #

If you want to create the banner programmatically, you need to manually add it to a layout container:

private void setUpBannerAd(){
    InMobiSdk.init(MainActivity.this, MY_ID);
    InMobiBanner bannerAd = new InMobiBanner(MainActivity.this, BANNER_ID);
    
    // Get a layout container from your XML (e.g., a LinearLayout with id "banner_container")
    LinearLayout container = findViewById(R.id.banner_container);
    container.addView(bannerAd);
    
    // Set listener and load ad
    bannerAd.setListener(/* Your BannerAdListener implementation */);
    bannerAd.load();
}

2. Verify SDK Initialization & Manifest Setup #

• Make sure InMobiSdk.init() is called before any ad-related operations, and that MY_ID is your correct InMobi account ID (use test IDs for development, official IDs for production).
• Double-check your AndroidManifest.xml for required permissions and configs:
  • Mandatory permissions:

    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
    

  • For InMobi SDK 10+, you can add account ID via meta-data (inside the <application> tag) instead of calling InMobiSdk.init()—pick one method, don't do both:

    <meta-data
        android:name="com.inmobi.sdk.AccountID"
        android:value="YOUR_ACCOUNT_ID"/>
    

3. Confirm Import Statements #

Ensure you've imported all required classes (missing imports will throw IDE errors, so check Android Studio's red underlines):

import com.inmobi.sdk.InMobiSdk;
import com.inmobi.ads.InMobiBanner;
import com.inmobi.ads.InMobiAdRequestStatus;
import android.widget.Toast;
import java.util.Map;

4. Validate Test Ad Configuration #

• Make sure BANNER_ID is an official InMobi test ad unit ID (not your production ID). You can find these in InMobi's developer docs—for example, a common test banner ID is 1234567890123456 (confirm with latest official info).
• Ensure your device has a working internet connection—InMobi ads require network access to load.

5. Use Logs for Better Debugging #

Toasts can sometimes fail to show due to UI thread issues or other background conflicts. Add log statements to your callbacks to get clearer insight:

import android.util.Log;

// Inside your BannerAdListener:
@Override
public void onAdLoadSucceeded(InMobiBanner inMobiBanner) {
    Log.d("InMobiBanner", "Ad loaded successfully!");
    Toast.makeText(MainActivity.this, "success", Toast.LENGTH_SHORT).show();
}

@Override
public void onAdLoadFailed(InMobiBanner inMobiBanner, InMobiAdRequestStatus inMobiAdRequestStatus) {
    Log.e("InMobiBanner", "Ad load failed: " + inMobiAdRequestStatus.getMessage());
    Toast.makeText(MainActivity.this, "fail: " + inMobiAdRequestStatus.getMessage(), Toast.LENGTH_SHORT).show();
}

Check Logcat in Android Studio for these messages—they'll tell you exactly why the ad isn't loading (e.g., invalid ID, network error, SDK initialization failure).

内容的提问来源于stack exchange，提问作者Jonáš Tichý