StatusBox.java

package cn.mutils.app.ui;

import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.Context;
import android.os.Build.VERSION;
import android.os.Build.VERSION_CODES;
import android.util.AttributeSet;
import android.view.View;
import android.view.WindowManager;

import cn.mutils.app.ui.core.IStatusBarOwner;
import cn.mutils.app.util.AppUtil;
import cn.mutils.core.codec.FlagUtil;

@SuppressWarnings("ResourceType")
@SuppressLint("DrawAllocation")
public class StatusBox extends View {

    protected int mMeasuredHeight = -1;

    public StatusBox(Context context) {
        super(context);
    }

    public StatusBox(Context context, AttributeSet attrs) {
        super(context, attrs);
    }

    public StatusBox(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {
        if (MeasureSpec.getMode(heightMeasureSpec) == MeasureSpec.AT_MOST) {
            if (mMeasuredHeight == -1) {
                Context context = getContext();
                if (context instanceof IStatusBarOwner) {
                    if (!((IStatusBarOwner) context).isStatusBarTranslucent()) {
                        mMeasuredHeight = 0;
                    } else {
                        mMeasuredHeight = AppUtil.getStatusBarHeight(context);
                    }
                } else {
                    if (VERSION.SDK_INT >= VERSION_CODES.KITKAT) {
                        if (context instanceof Activity) {
                            int flags = ((Activity) context).getWindow().getAttributes().flags;
                            if (FlagUtil.hasFlags(flags, WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS)) {
                                mMeasuredHeight = AppUtil.getStatusBarHeight(context);
                            } else {
                                mMeasuredHeight = 0;
                            }
                        } else {
                            mMeasuredHeight = 0;
                        }
                    } else {
                        mMeasuredHeight = 0;
                    }
                }
            }
            heightMeasureSpec = MeasureSpec.makeMeasureSpec(mMeasuredHeight, MeasureSpec.EXACTLY);
        }
        super.onMeasure(widthMeasureSpec, heightMeasureSpec);
    }

}