LayoutInflater · dangxy99的Blog

获取LayoutInflater 的两种方法

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LayoutInflater inflater = getLayoutInflater()；
LayoutInflater inflater = (LayoutInflater)
mContext.getSystemService(LAYOUT_INFLATER_SERVICE);

设置全屏的两种方法,代码设置

这行代码必须设置在setConentView(R.layout.main) 之前

1 2	requestWindowFeature(Window.FEATURE_NO_TITLE); getWindow().setFlags(WindowManager.LayoutParams. FLAG_FULLSCREEN , WindowManager.LayoutParams. FLAG_FULLSCREEN);

布局文件设置

1	android :themen="@android:style/Theme.NoTitleBar.Fullscreen"

[x] 巧用ViewPager 打造不一样的广告轮播切换效果

总结:

- viewpager 要实现显示多个条目 需要设置viewpager的外层的布局文件和viewpager都要设置为false

    设置相应的属性即可

    设置viewpager的移动动画

    android:clipChildren="false"

    viewPager.setPageTransformer


- 实现透明

   实现 AlphaPageTransformer implements ViewPager.PageTransformer 
   调用 viewPager.setPageTransformer(new AlphaPageTransformer());

  

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25 private static final float DEFAULT_MIN_ALPHA = 0.5f;
private float mMinAlpha = DEFAULT_MIN_ALPHA;
public void pageTransform(View view, float position)
{
    if (position < -1)
    { 
        view.setAlpha(mMinAlpha);
    } else if (position <= 1)
    { // [-1,1]
        if (position < 0) //[0，-1]
        { 
            float factor = mMinAlpha + (1 - mMinAlpha) * (1 + position);
            view.setAlpha(factor);
        } else//[1，0]
        {
            float factor = mMinAlpha + (1 - mMinAlpha) * (1 - position);
            view.setAlpha(factor);
        }
    } else
    { // (1,+Infinity]
        view.setAlpha(mMinAlpha);
    }
}

- 实现缩小

  > view.setSacleX();
  >
  > view.setScaleY();

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41 public class ZoomOutPageTransformer implements ViewPager.PageTransformer {
    private static final float MIN_SCALE = 0.70f;
    private static final float MIN_ALPHA = 0.5f;
    public void transformPage(View view, float position) {
        int pageWidth = view.getWidth();
        int pageHeight = view.getHeight();
        if (position < -1) { // [-Infinity,-1)
            // This page is way off-screen to the left.
            view.setAlpha(MIN_ALPHA);
            view.setScaleX(MIN_SCALE);
            view.setScaleY(MIN_SCALE);
        } else if (position <= 1) { // [-1,1]
            // Modify the default slide transition to shrink the page as well
            float scaleFactor = Math.max(MIN_SCALE, 1 - Math.abs(position));
            float vertMargin = pageHeight * (1 - scaleFactor) / 2;
            float horzMargin = pageWidth * (1 - scaleFactor) / 2;
            if (position < 0) {
                view.setTranslationX(horzMargin - vertMargin / 2);
                view.setScaleX(1 + 0.3f * position);
                view.setScaleY(1 + 0.3f * position);
            } else {
                view.setTranslationX(-horzMargin + vertMargin / 2);
                view.setScaleX(1 - 0.3f * position);
                view.setScaleY(1 - 0.3f * position);
            }
            // Scale the page down (between MIN_SCALE and 1)
            // Fade the page relative to its size.
            view.setAlpha(MIN_ALPHA + (scaleFactor - MIN_SCALE) / (1 - MIN_SCALE) * (1 - MIN_ALPHA));
        } else { // (1,+Infinity]
            // This page is way off-screen to the right.
            view.setScaleX(MIN_SCALE);
            view.setScaleY(MIN_SCALE);
            view.setAlpha(MIN_ALPHA);
        }
    }
}

  

- 实现旋转

  > view.setPivotX();
  >
  > view.setPivotY();

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34 private static final float DEFAULT_MAX_ROTATE = 15.0f;
private float mMaxRotate = DEFAULT_MAX_ROTATE;
public void pageTransform(View view, float position)
{
    if (position < -1)
    { // [-Infinity,-1)
        // This page is way off-screen to the left.  
        view.setRotation(mMaxRotate * -1);
        view.setPivotX(view.getWidth());
        view.setPivotY(view.getHeight());
    } else if (position <= 1)
    { // [-1,1]  
        if (position < 0)//[-1，0]
        {
            view.setPivotX(view.getWidth() * (0.5f + 0.5f * (-position)));
            view.setPivotY(view.getHeight());
            view.setRotation(mMaxRotate * position);
        } else//[0,1]
        {
            view.setPivotX(view.getWidth() * 0.5f * (1 - position));
            view.setPivotY(view.getHeight());
            view.setRotation(mMaxRotate * position);
        }
    } else
    { // (1,+Infinity]  
        // This page is way off-screen to the right.  
        view.setRotation(mMaxRotate);
        view.setPivotX(view.getWidth() * 0);
        view.setPivotY(view.getHeight());
    }
}

[x] Android 探究 LayoutInflater setFactory

  总结：

- 可以获取相关的属性  

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15 LayoutInflaterCompat.setFactory(LayoutInflater.from(this), new LayoutInflaterFactory()
        {
            @Override
            public View onCreateView(View parent, String name, Context context, AttributeSet attrs)
            {
                Log.e(TAG, "name = " + name);
                int n = attrs.getAttributeCount();
                for (int i = 0; i < n; i++)
                {
                    Log.e(TAG, attrs.getAttributeName(i) + " , " + attrs.getAttributeValue(i));
                }
                return null;
            }
        });

- 可以进行相关的替换 将xml中的相关的TextView 替换为自定义的TextView

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5 if (name.equals("TextView"))
{
    MyTextView view = new com.zhy.MyTextView(context,attrs);
    return view;
}

- 获取字体

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9 if (typeface == null)
    {
        typeface = Typeface.createFromAsset(getAssets(), "hwxk.ttf");
    }
//设置相应的字体
 if ( view!= null && (view instanceof TextView))
      {
                ((TextView) view).setTypeface(typeface);
      }

看Android相关的书籍（一个小时）
- [ ] Android 群英会
写代码
学习总结

其他：
未解决的问题
1. 笔记代码应该整体对齐的方式
2. 笔记模板的创建