通过手机屏幕尺寸设置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应该如何显示，有一些图像：

最大的问题是我的imageViews是以编程方式创建的。 ImageViews布局和大小由此代码

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);

如何更改此代码的任何想法，我的应用程序在不同的屏幕尺寸上看起来相同？

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);

此外，当更改设备方向时，应交换宽度和高度。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
}