一种极低成本的Android屏幕适配方式

https://github.com/feisher/ScreenAdapter

https://github.com/yatoooon/AndroidScreenAdaptation

https://github.com/Firedamp/Rudeness

来自 https://mp.weixin.qq.com/s/d9QCoBP6kV9VSWvVldVVwA

private static float sNonCompatDensity;

private static  float sNonCompatScaleDensity;

private static void setCustomDensity(Activity activity,final Application application) {

final DisplayMetrics appDisplayMetrics = application.getResources().getDisplayMetrics();

if (sNonCompatDensity ==0) {

sNonCompatDensity = appDisplayMetrics.density;

sNonCompatScaleDensity = appDisplayMetrics.scaledDensity;

application.registerComponentCallbacks(new ComponentCallbacks() {

@Override

                public void onConfigurationChanged(Configuration newConfig) {

sNonCompatScaleDensity =application.getResources().getDisplayMetrics().scaledDensity;

}

@Override

                public void onLowMemory() {

}

});

}

//屏幕宽 的像素除以360 获得Density的值

        final float targetDensity = (float)appDisplayMetrics.widthPixels /380;

final int targetDensityDpi = (int) (targetDensity *160);

final float targetScaledDensity = (int) (targetDensity * (sNonCompatScaleDensity /sNonCompatDensity));

appDisplayMetrics.density = targetDensity;

appDisplayMetrics.scaledDensity = targetScaledDensity;

appDisplayMetrics.densityDpi = targetDensityDpi;

//这里把scaledDensity的值 等于获得Density的值（会有bug 下面会解决）

        final DisplayMetrics activityDisplayMetrics = application.getResources().getDisplayMetrics();

activityDisplayMetrics.density = targetDensity;

activityDisplayMetrics.scaledDensity = targetScaledDensity;

activityDisplayMetrics.densityDpi = targetDensityDpi;

}