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在我的应用程序中,我有一个Activity
来显示用户配置文件。用户可以通过从设备相机图片或Facebook图片等中选择它来设置其个人资料图片。但是这些图片可能非常大,所以如果它们太大,我需要以某种方式自动缩放pcba。根据显示器尺寸自动调整图像大小
编辑
由于回答我的问题,我试过的东西。我创建了一些辅助方法:
public static int getDisplayWidth(Activity activity) {
DisplayMetrics displaymetrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
return displaymetrics.widthPixels;
}
public static int getDisplayHeight(Activity activity) {
DisplayMetrics displaymetrics = new DisplayMetrics();
activity.getWindowManager().getDefaultDisplay().getMetrics(displaymetrics);
return displaymetrics.widthPixels;
}
public static int getDrawableWith(Context context, int id) {
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), id);
return bitmap.getWidth();
}
public static int getDrawableHeight(Context context, int id) {
Bitmap bitmap = BitmapFactory.decodeResource(context.getResources(), id);
return bitmap.getHeight();
}
public static int getHeightOfImage(int originalWidth, int originalHeight, int targetWidth) {
double ratio = ((double)originalWidth/(double)originalHeight);
return (int)(targetWidth/ratio);
}
,我现在尝试创建一个调整大小绘制并将其设置为我的ImageView:
RelativeLayout.LayoutParams layoutParamsView = new RelativeLayout.LayoutParams(RelativeLayout.LayoutParams.MATCH_PARENT, RelativeLayout.LayoutParams.MATCH_PARENT);
this.setLayoutParams(layoutParamsView);
int originalWidth = Helper.getDrawableWith(this.getContext(), R.drawable.background_wave);
int originalHeight = Helper.getDrawableHeight(this.getContext(), R.drawable.background_wave);
int targetWidth = Helper.getDisplayWidth((Activity)this.getContext());
int targetHeight = Helper.getHeightOfImage(originalWidth, originalHeight, targetWidth);
RelativeLayout.LayoutParams layoutParamsImageview = new RelativeLayout.LayoutParams(targetWidth, targetHeight);
layoutParamsImageview.addRule(RelativeLayout.ALIGN_PARENT_BOTTOM);
layoutParamsImageview.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
Drawable drawable = Helper.getScaledDrawable(this.getContext(), R.drawable.background_wave, targetWidth, targetHeight);
this.imageViewBackgroundWave = new ImageView(this.getContext());
this.imageViewBackgroundWave.setLayoutParams(layoutParamsImageview);
this.imageViewBackgroundWave.setImageDrawable(drawable);
this.addView(this.imageViewBackgroundWave);
这只是正常工作依赖于显示尺寸调整图像大小。
谢谢。这是正确的答案,我更新了我的帖子以显示解决方案。 – Mulgard