4月4日，各種App流行灰色模式，實現探索

第一種方法：

Paint paint = new Paint();
ColorMatrix cm = new ColorMatrix();
cm.setSaturation(0);
mPaint.setColorFilter(new ColorMatrixColorFilter(cm));
getWindow().getDecorView().setLayerType(View.LAYER_TYPE_HARDWARE, paint);

第二種方法：

1.創建類：名字無所謂

public class GrayFrameLayout extends FrameLayout {
    private Paint mPaint = new Paint();

    public GrayFrameLayout(Context context, AttributeSet attrs) {
        super(context, attrs);

        ColorMatrix cm = new ColorMatrix();
        cm.setSaturation(0);
        mPaint.setColorFilter(new ColorMatrixColorFilter(cm));
    }

    @Override
    protected void dispatchDraw(Canvas canvas) {
        canvas.saveLayer(null, mPaint, Canvas.ALL_SAVE_FLAG);
        super.dispatchDraw(canvas);
        canvas.restore();
    }


    @Override
    public void draw(Canvas canvas) {
        canvas.saveLayer(null, mPaint, Canvas.ALL_SAVE_FLAG);
        super.draw(canvas);
        canvas.restore();
    }

}

 

2.在baseactivity中進行修改引用：

 

@Override
    public View onCreateView(String name, Context context, AttributeSet attrs) {
        if ("FrameLayout".equals(name)) {
            int count = attrs.getAttributeCount();
            for (int i = 0; i < count; i++) {
                String attributeName = attrs.getAttributeName(i);
                String attributeValue = attrs.getAttributeValue(i);
                if (attributeName.equals("id")) {
                    int id = Integer.parseInt(attributeValue.substring(1));
                    String idVal = getResources().getResourceName(id);
                    if ("android:id/content".equals(idVal)) {
                        //因爲這是API23之後才能改變的，所以你的判斷版本
                        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                            //獲取窗口區域
                            Window window = this.getWindow();
                            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
                            //設置狀態欄顏色
                              window.setStatusBarColor(Color.parseColor("#848484"));
                            //設置顯示爲白色背景，黑色字體
//                            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
                        }
                        GrayFrameLayout grayFrameLayout = new GrayFrameLayout(context, attrs);
                        return grayFrameLayout;
                    }
                }
            }
        }
        return super.onCreateView(name, context, attrs);
    }

運行之後就可以了 

本文代碼參考鴻陽的文章