今日頭條螢幕適配方案
阿新 • • 發佈:2019-01-27
import android.app.Activity; import android.app.Application; import android.content.ComponentCallbacks; import android.content.res.Configuration; import android.support.annotation.NonNull; import android.util.DisplayMetrics; public class DensityUtil { private static float sRoncompatDennsity; private static float sRoncompatScaledDensity; private void setCustomDensity(@NonNull Activity activity, final @NonNull Application application) { //application final DisplayMetrics appDisplayMetrics = application.getResources().getDisplayMetrics(); if (sRoncompatDennsity == 0) { sRoncompatDennsity = appDisplayMetrics.density; sRoncompatScaledDensity = appDisplayMetrics.scaledDensity; application.registerComponentCallbacks(new ComponentCallbacks() { @Override public void onConfigurationChanged(Configuration newConfig) { if (newConfig != null && newConfig.fontScale > 0) { sRoncompatScaledDensity = application.getResources().getDisplayMetrics().scaledDensity; } } @Override public void onLowMemory() { } }); } //計算寬為360dp final float targetDensity = appDisplayMetrics.widthPixels / 360; final float targetScaledDensity = targetDensity * (sRoncompatScaledDensity / sRoncompatDennsity); final int targetDensityDpi = (int) (targetDensity * 160); appDisplayMetrics.density = targetDensity; appDisplayMetrics.densityDpi = targetDensityDpi; appDisplayMetrics.scaledDensity = targetScaledDensity; //activity final DisplayMetrics activityDisplayMetrics = activity.getResources().getDisplayMetrics(); activityDisplayMetrics.density = targetDensity; activityDisplayMetrics.densityDpi = targetDensityDpi; activityDisplayMetrics.scaledDensity = targetScaledDensity; } }