android - 通过手机屏幕大小设置 ImageView 的大小

Question

我希望 ImageView 在不同的屏幕尺寸上看起来相同。为了让您更容易理解它的外观，这里有一些图片:

最大的问题是我的 imageViews 是以编程方式创建的。 ImageViews 布局和大小由这段代码设置

LinearLayout LinearLayoutas = (LinearLayout)findViewById(R.id.LinearLayout);

         ImageView ImageViewas = new ImageView(this);

         ImageViewas.setScaleType(ImageView.ScaleType.FIT_CENTER);
         LinearLayoutas.setGravity(Gravity.CENTER);
         LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);
         ImageViewas.setLayoutParams(params);
         ImageViewas.getLayoutParams().height = 650;
         ImageViewas.getLayoutParams().width = 950;
         params.setMargins(0, 50, 0, 0);

关于如何更改此代码以使我的应用在不同屏幕尺寸上看起来相同有什么想法吗？

Answer 1

好吧，您可以检索设备分辨率并设置 imageView 宽度和高度。这是解决方案。

private class ScreenResolution {
    int width;
    int height;
    public ScreenResolution(int width, int height) {
        this.width = width;
        this.height = height;
    }
}
@SuppressLint("NewApi")
@SuppressWarnings("deprecation")
ScreenResolution deviceDimensions() {
    int currentapiVersion = android.os.Build.VERSION.SDK_INT;
    // getsize() is available from API 13
    if (currentapiVersion >= android.os.Build.VERSION_CODES.HONEYCOMB_MR2) {
        Display display = getWindowManager().getDefaultDisplay();
        Point size = new Point();
        display.getSize(size);
        return new ScreenResolution(size.x, size.y);
    }
    else {
        Display display = getWindowManager().getDefaultDisplay();      
        // getWidth() & getHeight() are deprecated
        return new ScreenResolution(display.getWidth(), display.getHeight());
    }
}

..................

LinearLayout LinearLayoutas = (LinearLayout)findViewById(R.id.LinearLayout);

ImageView ImageViewas = new ImageView(this);

ImageViewas.setScaleType(ImageView.ScaleType.FIT_CENTER);
LinearLayoutas.setGravity(Gravity.CENTER);
LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(LinearLayout.LayoutParams.WRAP_CONTENT, LinearLayout.LayoutParams.WRAP_CONTENT);

ScreenResolution screenRes = deviceDimensions();
ImageViewas.setLayoutParams(params);
ImageViewas.getLayoutParams().height = screenRes.height;
ImageViewas.getLayoutParams().width = screenRes.width;
params.setMargins(0, 50, 0, 0);

另外，当设备方向改变时，宽度和高度也应该交换。您可以在 onConfigurationChanged 中执行此操作:

@Override
public void onConfigurationChanged(Configuration newConfiguration) {
    super.onConfigurationChanged(newConfiguration);
    // swap device width and height here and re-assign
}