我有一个使用Picasa网络相册的壁纸应用程序，我想添加一些AdMob。我向FullImageActivity和xml添加了一个横幅，当我尝试从应用程序执行FullImageActivity时，应用程序现在强行关闭。我弄清楚了。请帮忙。
FullImageActivity.java
package net.rz.amazinghdwallpapers;
import net.rz.amazinghdwallpapers.app.AppController;
import net.rz.amazinghdwallpapers.picasa.model.Wallpaper;
import net.rz.amazinghdwallpapers.util.Utils;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.Point;
import android.graphics.drawable.BitmapDrawable;
import android.os.Bundle;
import android.util.Log;
import android.view.Display;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.ImageView;
import android.widget.LinearLayout;
import android.widget.LinearLayout.LayoutParams;
import android.widget.ProgressBar;
import android.widget.Toast;
import com.android.volley.Request.Method;
import com.android.volley.Response;
import com.android.volley.VolleyError;
import com.android.volley.toolbox.ImageLoader;
import com.android.volley.toolbox.ImageLoader.ImageContainer;
import com.android.volley.toolbox.ImageLoader.ImageListener;
import com.android.volley.toolbox.JsonObjectRequest;
import com.google.android.gms.ads.*;
public class FullScreenViewActivity extends Activity implements OnClickListener {
private static final String TAG = FullScreenViewActivity.class
.getSimpleName();
public static final String TAG_SEL_IMAGE = "selectedImage";
private Wallpaper selectedPhoto;
private ImageView fullImageView;
private LinearLayout llSetWallpaper, llDownloadWallpaper;
private Utils utils;
private ProgressBar pbLoader;
// Picasa JSON response node keys
private static final String TAG_ENTRY = "entry",
TAG_MEDIA_GROUP = "media$group",
TAG_MEDIA_CONTENT = "media$content", TAG_IMG_URL = "url",
TAG_IMG_WIDTH = "width", TAG_IMG_HEIGHT = "height";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_fullscreen_image);
// Look up the AdView as a resource and load a request.
AdView adView = (AdView) this.findViewById(R.id.adView);
AdRequest adRequest = new AdRequest.Builder().build();
adView.loadAd(adRequest);
fullImageView = (ImageView) findViewById(R.id.imgFullscreen);
llSetWallpaper = (LinearLayout) findViewById(R.id.llSetWallpaper);
llDownloadWallpaper = (LinearLayout) findViewById(R.id.llDownloadWallpaper);
pbLoader = (ProgressBar) findViewById(R.id.pbLoader);
// hide the action bar in fullscreen mode
getActionBar().hide();
utils = new Utils(getApplicationContext());
// layout click listeners
llSetWallpaper.setOnClickListener(this);
llDownloadWallpaper.setOnClickListener(this);
// setting layout buttons alpha/opacity
llSetWallpaper.getBackground().setAlpha(70);
llDownloadWallpaper.getBackground().setAlpha(70);
Intent i = getIntent();
selectedPhoto = (Wallpaper) i.getSerializableExtra(TAG_SEL_IMAGE);
// check for selected photo null
if (selectedPhoto != null) {
// fetch photo full resolution image by making another json request
fetchFullResolutionImage();
} else {
Toast.makeText(getApplicationContext(),
getString(R.string.msg_unknown_error), Toast.LENGTH_SHORT)
.show();
}
}
/**
* Fetching image fullresolution json
* */
private void fetchFullResolutionImage() {
String url = selectedPhoto.getPhotoJson();
// show loader before making request
pbLoader.setVisibility(View.VISIBLE);
llSetWallpaper.setVisibility(View.GONE);
llDownloadWallpaper.setVisibility(View.GONE);
// volley's json obj request
JsonObjectRequest jsonObjReq = new JsonObjectRequest(Method.GET, url,
null, new Response.Listener<JSONObject>() {
@Override
public void onResponse(JSONObject response) {
Log.d(TAG,
"Image full resolution json: "
+ response.toString());
try {
// Parsing the json response
JSONObject entry = response
.getJSONObject(TAG_ENTRY);
JSONArray mediacontentArry = entry.getJSONObject(
TAG_MEDIA_GROUP).getJSONArray(
TAG_MEDIA_CONTENT);
JSONObject mediaObj = (JSONObject) mediacontentArry
.get(0);
String fullResolutionUrl = mediaObj
.getString(TAG_IMG_URL);
// image full resolution widht and height
final int width = mediaObj.getInt(TAG_IMG_WIDTH);
final int height = mediaObj.getInt(TAG_IMG_HEIGHT);
Log.d(TAG, "Full resolution image. url: "
+ fullResolutionUrl + ", w: " + width
+ ", h: " + height);
ImageLoader imageLoader = AppController
.getInstance().getImageLoader();
// We download image into ImageView instead of
// NetworkImageView to have callback methods
// Currently NetworkImageView doesn't have callback
// methods
imageLoader.get(fullResolutionUrl,
new ImageListener() {
@Override
public void onErrorResponse(
VolleyError arg0) {
Toast.makeText(
getApplicationContext(),
getString(R.string.msg_wall_fetch_error),
Toast.LENGTH_LONG).show();
}
@Override
public void onResponse(
ImageContainer response,
boolean arg1) {
if (response.getBitmap() != null) {
// load bitmap into imageview
fullImageView
.setImageBitmap(response
.getBitmap());
adjustImageAspect(width, height);
// hide loader and show set &
// download buttons
pbLoader.setVisibility(View.GONE);
llSetWallpaper
.setVisibility(View.VISIBLE);
llDownloadWallpaper
.setVisibility(View.VISIBLE);
}
}
});
} catch (JSONException e) {
e.printStackTrace();
Toast.makeText(getApplicationContext(),
getString(R.string.msg_unknown_error),
Toast.LENGTH_LONG).show();
}
}
}, new Response.ErrorListener() {
@Override
public void onErrorResponse(VolleyError error) {
Log.e(TAG, "Error: " + error.getMessage());
// unable to fetch wallpapers
// either google username is wrong or
// devices doesn't have internet connection
Toast.makeText(getApplicationContext(),
getString(R.string.msg_wall_fetch_error),
Toast.LENGTH_LONG).show();
}
});
// Remove the url from cache
AppController.getInstance().getRequestQueue().getCache().remove(url);
// Disable the cache for this url, so that it always fetches updated
// json
jsonObjReq.setShouldCache(false);
// Adding request to request queue
AppController.getInstance().addToRequestQueue(jsonObjReq);
}
/**
* Adjusting the image aspect ration to scroll horizontally, Image height
* will be screen height, width will be calculated respected to height
* */
@SuppressWarnings("deprecation")
@SuppressLint("NewApi")
private void adjustImageAspect(int bWidth, int bHeight) {
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(
LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
if (bWidth == 0 || bHeight == 0)
return;
int sHeight = 0;
if (android.os.Build.VERSION.SDK_INT >= 13) {
Display display = getWindowManager().getDefaultDisplay();
Point size = new Point();
display.getSize(size);
sHeight = size.y;
} else {
Display display = getWindowManager().getDefaultDisplay();
sHeight = display.getHeight();
}
int new_width = (int) Math.floor((double) bWidth * (double) sHeight
/ (double) bHeight);
params.width = new_width;
params.height = sHeight;
Log.d(TAG, "Fullscreen image new dimensions: w = " + new_width
+ ", h = " + sHeight);
fullImageView.setLayoutParams(params);
}
/**
* View click listener
* */
@Override
public void onClick(View v) {
Bitmap bitmap = ((BitmapDrawable) fullImageView.getDrawable())
.getBitmap();
int id = v.getId();
if (id == R.id.llDownloadWallpaper) {
utils.saveImageToSDCard(bitmap);
} else if (id == R.id.llSetWallpaper) {
utils.setAsWallpaper(bitmap);
} else {
}
}
}
activity_fullscreen_image.xml
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:ads="http://schemas.android.com/apk/lib/com.google.ads"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@color/black" >
<ProgressBar
android:id="@+id/pbLoader"
style="?android:attr/progressBarStyle"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerInParent="true" >
</ProgressBar>
<!-- Scroll view for fullscreen preview -->
<HorizontalScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="none" >
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent" >
<ImageView
android:id="@+id/imgFullscreen"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:scaleType="fitXY" />
</LinearLayout>
</HorizontalScrollView>
<!-- Set as wallpaper button -->
<LinearLayout
android:id="@+id/llSetWallpaper"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginBottom="10dp"
android:layout_marginLeft="10dp"
android:background="@drawable/btn_rounded_corner"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:src="@drawable/ico_apply" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="@string/set_wallpaper"
android:textColor="@color/white"
android:textSize="18dp" />
</LinearLayout>
<!-- Download wallpaper button -->
<LinearLayout
android:id="@+id/llDownloadWallpaper"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:background="@drawable/btn_rounded_corner"
android:gravity="center_vertical"
android:orientation="horizontal" >
<ImageView
android:layout_width="25dp"
android:layout_height="25dp"
android:src="@drawable/ico_download" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:paddingLeft="10dp"
android:text="@string/download_wallpaper"
android:textColor="@color/white"
android:textSize="18dp" />
</LinearLayout>
<com.google.android.gms.ads.AdView android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true"
ads:adUnitId="ca-app-pub-1620901891740306/1861775477"
ads:adSize="SMART_BANNER"/>
</RelativeLayout>
logcat的：
08-24 11:02:45.863: E/OpenGLRenderer(1388): Getting MAX_TEXTURE_SIZE from GradienCache
08-24 11:02:45.863: E/OpenGLRenderer(1388): MAX_TEXTURE_SIZE: 16384
08-24 11:02:45.879: E/OpenGLRenderer(1388): Getting MAX_TEXTURE_SIZE from Caches::initConstraints()
08-24 11:02:45.879: E/OpenGLRenderer(1388): MAX_TEXTURE_SIZE: 16384
08-24 11:02:56.615: E/AndroidRuntime(1388): FATAL EXCEPTION: main
08-24 11:02:56.615: E/AndroidRuntime(1388): Process: net.rz.amazinghdwallpapers, PID: 1388
08-24 11:02:56.615: E/AndroidRuntime(1388): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.rz.amazinghdwallpapers/net.rz.amazinghdwallpapers.FullScreenViewActivity} : java.lang.ClassCastException: android.widget.ImageView cannot be cast to com.google.android.gms.ads.AdView
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2195)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2245)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.ActivityThread.access$800(ActivityThread.java:135)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1196)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.os.Handler.dispatchMessage(Handler.java:102)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.os.Looper.loop(Looper.java:136)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.ActivityThread.main(ActivityThread.java:5017)
08-24 11:02:56.615: E/AndroidRuntime(1388): at java.lang.reflect.Method.invokeNative(Native Method)
08-24 11:02:56.615: E/AndroidRuntime(1388): at java.lang.reflect.Method.invoke(Method.java:515)
08-24 11:02:56.615: E/AndroidRuntime(1388): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:779)
08-24 11:02:56.615: E/AndroidRuntime(1388): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:595)
08-24 11:02:56.615: E/AndroidRuntime(1388): at dalvik.system.NativeStart.main(Native Method)
08-24 11:02:56.615: E/AndroidRuntime(1388): Caused by: java.lang.ClassCastException: android.widget.ImageView cannot be cast to com.google.android.gms.ads.AdView
08-24 11:02:56.615: E/AndroidRuntime(1388): at net.rz.amazinghdwallpapers.FullScreenViewActivity.onCreate(FullScreenViewActivity.java:60)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.Activity.performCreate(Activity.java:5231)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
08-24 11:02:56.615: E/AndroidRuntime(1388): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2159)
08-24 11:02:56.615: E/AndroidRuntime(1388): ... 11 more
答案 0 :(得分：0)
您的stacktrace为您提供答案。
您尝试将ImageView投射到AdVIew的FullScreenViewActivity第60行。
我打赌第60行是
AdView adView = (AdView) this.findViewById(R.id.adView);
这意味着在你的布局中，XML R.id.adView实际上是用于ImageView，你需要做一个干净的构建。