我试图在执行 Activity 时在 AdsView 下方放置一个按钮 - download_btn。
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 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="@android:color/black"
android:orientation="vertical" >
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@android:color/black"
android:orientation="vertical" >
<ImageView
android:id="@+id/selected_imageview"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:layout_above="@+id/gallery_relative_layout"
android:layout_marginLeft="30dip"
android:layout_marginRight="30dip"
android:layout_marginTop="30dip" />
<RelativeLayout
android:id="@+id/gallery_relative_layout"
android:layout_width="fill_parent"
android:layout_height="150dip"
android:layout_alignParentBottom="true"
android:orientation="horizontal" >
<ImageView
android:id="@+id/left_arrow_imageview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:layout_marginLeft="15dip"
android:src="@drawable/arrow_left_disabled" />
<Gallery
android:id="@+id/gallery"
android:layout_width="0dip"
android:layout_height="150dip"
android:layout_marginLeft="20dip"
android:layout_marginRight="20dip"
android:layout_toLeftOf="@+id/right_arrow_imageview"
android:layout_toRightOf="@+id/left_arrow_imageview"
android:spacing="20dip" />
<ImageView
android:id="@+id/right_arrow_imageview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_centerVertical="true"
android:layout_marginRight="15dip"
android:src="@drawable/arrow_right_enabled" />
<Button
android:id="@+id/set_btn"
android:layout_width="wrap_content"
android:layout_height="35dip"
android:layout_alignParentRight="true"
android:layout_below="@+id/right_arrow_imageview"
android:onClick="onButtonClicked"
android:text="Set as Wallpaper" />
<com.google.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
ads:adSize="BANNER"
ads:adUnitId="XXXXXXXXXXXX"
ads:loadAdOnCreate="true" />
<Button
android:id="@+id/download_btn"
android:layout_width="wrap_content"
android:layout_height="35dip"
android:layout_alignParentRight="true"
android:layout_below="@+id/adView"
android:onClick="onDownloadButtonClicked"
android:text="Load More Wallpaper" />
</RelativeLayout>
</RelativeLayout>
</LinearLayout>
编辑:下面是代码的 Activity :
public class GalleryDemoActivity extends Activity {
public static final String COUNTURL = "http://wallpaper.hukumnama.in/sikhwallpaper.aspx";
public static final String IMAGEURL = "XXXXXXXXXXXXX";
public static final String DIRECTORYNAME = "XXXXXXXXXXXXXXXX";
private ImageView selectedImageView;
public static int networkCount =0;
public static int dbCount =0;
private ImageView leftArrowImageView;
private ImageView rightArrowImageView;
private Gallery gallery;
Bitmap selectedImage =null;
private int selectedImagePosition = 0;
private List<Bitmap> drawables;
MyDB db = null;
private GalleryImageAdapter galImageAdapter;
NetworkAccess networkAccess = null;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
getDrawablesList();
setupUI();
}
private void setupUI() {
try{
selectedImageView = (ImageView) findViewById(R.id.selected_imageview);
leftArrowImageView = (ImageView) findViewById(R.id.left_arrow_imageview);
rightArrowImageView = (ImageView) findViewById(R.id.right_arrow_imageview);
gallery = (Gallery) findViewById(R.id.gallery);
leftArrowImageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (selectedImagePosition > 0) {
--selectedImagePosition;
}
gallery.setSelection(selectedImagePosition, false);
}
});
rightArrowImageView.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
if (selectedImagePosition < drawables.size() - 1) {
++selectedImagePosition;
}
gallery.setSelection(selectedImagePosition, false);
}
});
gallery.setOnItemSelectedListener(new OnItemSelectedListener() {
@Override
public void onItemSelected(AdapterView<?> parent, View view, int pos, long id) {
selectedImagePosition = pos;
if (selectedImagePosition > 0 && selectedImagePosition < drawables.size() - 1) {
leftArrowImageView.setImageDrawable(getResources().getDrawable(R.drawable.arrow_left_enabled));
rightArrowImageView.setImageDrawable(getResources().getDrawable(R.drawable.arrow_right_enabled));
} else if (selectedImagePosition == 0) {
leftArrowImageView.setImageDrawable(getResources().getDrawable(R.drawable.arrow_left_disabled));
} else if (selectedImagePosition == drawables.size() - 1) {
rightArrowImageView.setImageDrawable(getResources().getDrawable(R.drawable.arrow_right_disabled));
}
changeBorderForSelectedImage(selectedImagePosition);
setSelectedImage(selectedImagePosition);
}
@Override
public void onNothingSelected(AdapterView<?> arg0) {
}
});
galImageAdapter = new GalleryImageAdapter(this, drawables);
gallery.setAdapter(galImageAdapter);
if (drawables.size() > 0) {
gallery.setSelection(selectedImagePosition, false);
}
if (drawables.size() == 1) {
rightArrowImageView.setImageDrawable(getResources().getDrawable(R.drawable.arrow_right_disabled));
}
}catch(Exception e){
System.out.println("Exception in setting up UI"+e);
}
AdView adView = (AdView)this.findViewById(R.id.adView);
AdRequest adrequest = new AdRequest();
adView.loadAd(adrequest);
}
private void changeBorderForSelectedImage(int selectedItemPos) {
int count = gallery.getChildCount();
for (int i = 0; i < count; i++) {
ImageView imageView = (ImageView) gallery.getChildAt(i);
imageView.setBackgroundDrawable(getResources().getDrawable(R.drawable.image_border));
imageView.setPadding(3, 3, 3, 3);
}
ImageView imageView = (ImageView) gallery.getSelectedView();
imageView.setBackgroundDrawable(getResources().getDrawable(R.drawable.selected_image_border));
imageView.setPadding(3, 3, 3, 3);
}
private void getDrawablesList() {
try{
drawables = new ArrayList<Bitmap>();
/* String ExternalStorageDirectoryPath = Environment
.getExternalStoragePublicDirectory(Environment.getExternalStorageDirectory() + DIRECTORYNAME)
.getAbsolutePath();
*/
String ExternalStorageDirectoryPath =Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS)+DIRECTORYNAME;
String targetPath = ExternalStorageDirectoryPath ;
Toast.makeText(getApplicationContext(), targetPath, Toast.LENGTH_LONG).show();
File targetDirector = new File(targetPath);
File[] files = targetDirector.listFiles();
files = sortFiles(files, targetPath+"/");
if(files!=null)
{
for (File file : files){
System.out.println(file.getName());
Bitmap bm = decodeSampledBitmapFromUri(file.getAbsolutePath(), 520, 520);
drawables.add(bm);
}
}
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image1)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image2)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image3)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image4)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image5)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image6)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image7)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image8)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image9)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image10)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image11)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image12)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image13)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image14)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image15)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image16)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image17)).getBitmap());
drawables.add(((BitmapDrawable)getResources().getDrawable(R.drawable.image18)).getBitmap());
}catch(Exception e){System.out.println("Exception in drawable list creation"+e);}
}
public int calculateInSampleSize(
BitmapFactory.Options options, int reqWidth, int reqHeight) {
// Raw height and width of image
final int height = options.outHeight;
final int width = options.outWidth;
int inSampleSize = 1;
if (height > reqHeight || width > reqWidth) {
if (width > height) {
inSampleSize = Math.round((float)height / (float)reqHeight);
} else {
inSampleSize = Math.round((float)width / (float)reqWidth);
}
}
return inSampleSize;
}
public Bitmap decodeSampledBitmapFromUri(String path, int reqWidth, int reqHeight) {
Bitmap bm = null;
// First decode with inJustDecodeBounds=true to check dimensions
final BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(path, options);
// Calculate inSampleSize
options.inSampleSize = calculateInSampleSize(options, reqWidth, reqHeight);
// Decode bitmap with inSampleSize set
options.inJustDecodeBounds = false;
bm = BitmapFactory.decodeFile(path, options);
return bm;
}
private void setSelectedImage(int selectedImagePosition) {
selectedImage = drawables.get(selectedImagePosition);
selectedImageView.setImageBitmap(selectedImage);
selectedImageView.setScaleType(ScaleType.FIT_XY);
}
public void onButtonClicked(View view)
{
switch(view.getId())
{
case R.id.set_btn:
System.out.println("On button clicked....Wallpaper");
WallpaperManager wm = WallpaperManager.getInstance(this);
try {
System.out.println("Hieght"+wm.getDesiredMinimumHeight());
System.out.println("width"+wm.getDesiredMinimumWidth());
wm.setBitmap(selectedImage);
Toast.makeText(this, "Wallpaper Set SuccessFully", Toast.LENGTH_LONG).show();
} catch (IOException e) {
System.out.println( "Cannot set image as wallpaper"+e);
}
}
}
private File[] sortFiles(File[] inputFiles,String directoryName){
ArrayList<Integer> fileNames = new ArrayList<Integer>();
File[] sortedArray = new File[inputFiles.length];
for(File f : inputFiles){
if(f !=null){
fileNames.add( Integer.parseInt(f.getName().replace(".jpg", "")));
}
}
Collections.sort(fileNames);
Collections.reverse(fileNames);
for(int i=0; i<fileNames.size();i++){
sortedArray[i] = new File (directoryName+fileNames.get(i)+".jpg");
}
return sortedArray;
}
}
请帮我一些指示。
谢谢
安缦
最佳答案
您应该将 AdView 移动到 LinearLayout 或其他内容中，然后引用有关此 LinearLayout 而不是 AdView 的 download_btn :
<LinearLayout android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="@+id/LLadView">
<com.google.ads.AdView
android:id="@+id/adView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
ads:adSize="BANNER"
ads:adUnitId="XXXXXXXXXXXX"
ads:loadAdOnCreate="true" />
</LinearLayout>
<Button
android:id="@+id/download_btn"
android:layout_width="wrap_content"
android:layout_height="35dip"
android:layout_alignParentRight="true"
android:layout_below="@+id/LLadView"
android:onClick="onDownloadButtonClicked"
android:text="Load More Wallpaper" />
关于java - 类转换异常按钮无法转换为 Adview，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/24729551/