设置图像壁纸以适应屏幕"

Question

当用户将其作为其设备的背景时，我想将图像设置为适合所有屏幕，我尝试了许多代码，但它不起作用。 这是我的代码

item_home_image = findViewById(R.id.item_home_image);
item_home_image.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (checkPermission()) {
final Intent intent = getIntent();
String url = intent.getStringExtra("imageUrl");
Picasso.with(PicassoDisplayImageAdapter.this).load(url).into(new Target() {
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
WallpaperManager wallpaperManager = WallpaperManager.getInstance(PicassoDisplayImageAdapter.this);
try {
wallpaperManager.setBitmap(bitmap);
} catch (IOException ex) {
ex.printStackTrace();
}
Toasty.normal(PicassoDisplayImageAdapter.this, "تم تغيير الخلفية بنجاح", Toast.LENGTH_SHORT).show();
}
@Override
public void onBitmapFailed(final Drawable errorDrawable) {
Toasty.error(PicassoDisplayImageAdapter.this, "فشل تحميل الصورة", Toast.LENGTH_SHORT).show();
}
@Override
public void onPrepareLoad(final Drawable placeHolderDrawable) {
Toasty.normal(PicassoDisplayImageAdapter.this, "جاري التحميل", Toast.LENGTH_SHORT).show();
}
});
}
}
});

Answer 1

试试这个：

DisplayMetrics metrics = new DisplayMetrics(); 
getWindowManager().getDefaultDisplay().getMetrics(metrics);
int height = metrics.heightPixels; 
int width = metrics.widthPixels;
Bitmap newBitmap = Bitmap.createScaledBitmap(bitmap, width, height, true); 
try {
wallpaperManager.setBitmap(newBitmap);
} catch (IOException e) {
e.printStackTrace();
}

Answer 2

使用wallpaperManager设置的位图可能与显示大小不同，因此，您需要在传递到wallpaperManager之前缩放该位图

试用

item_home_image = findViewById(R.id.item_home_image);
item_home_image.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (checkPermission()) {
final Intent intent = getIntent();
String url = intent.getStringExtra("imageUrl");
Picasso.with(PicassoDisplayImageAdapter.this).load(url).into(new Target() {
@RequiresApi(api = Build.VERSION_CODES.N)
@Override
public void onBitmapLoaded(Bitmap bitmap, Picasso.LoadedFrom from) {
WallpaperManager wallpaperManager = WallpaperManager.getInstance(PicassoDisplayImageAdapter.this);
try {
int height = getResources().getDisplayMetrics().heightPixels; 
int width = getResources().getDisplayMetrics().widthPixels;
bitmap = Bitmap.createScaledBitmap(bitmap, width, height, true); 
wallpaperManager.setBitmap(bitmap);
} catch (IOException ex) {
ex.printStackTrace();
}
Toasty.normal(PicassoDisplayImageAdapter.this, "تم تغيير الخلفية بنجاح", Toast.LENGTH_SHORT).show();
}
@Override
public void onBitmapFailed(final Drawable errorDrawable) {
Toasty.error(PicassoDisplayImageAdapter.this, "فشل تحميل الصورة", Toast.LENGTH_SHORT).show();
}
@Override
public void onPrepareLoad(final Drawable placeHolderDrawable) {
Toasty.normal(PicassoDisplayImageAdapter.this, "جاري التحميل", Toast.LENGTH_SHORT).show();
}
});
}
}
});

Answer 3

您可以使用此 ImageView 属性

android:scaleType="fitXY"

更多链接