Question

当用户将其设置为设备的背景时，我想将图像设置为适合所有屏幕，我尝试了许多代码，但是它不起作用。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

尝试一下：

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

您使用wallpaperManager设置的位图可能与显示尺寸不同，因此，您需要先缩放该位图，然后再传递给wallpaperManager

尝试使用

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link

将图片墙纸设置为适合屏幕“

3 个答案: