int除法

int除以int一定永远是int,要返回float,必须要用一个数是float

gradle support包冲突

• 自己写库时 对于support包不要compile,而要provided,确保依赖不传递

• 查看dependency中的依赖:
  Gradle View只有在as3.0以下有用.
  可以命令行:
  ./gradlew :app:dependencies --configuration compile
  如果报错: 找不到或无法加载主类 org.gradle.wrapper.GradleWrapperMain,拷一份gradlewrapper过来即可.

• 去除有依赖冲突的:

compile ("com.afollestad.material-dialogs:core:0.9.5.0") {
        exclude group: 'com.android.support'
    }
或者内部去除特定module
 exclude group: 'com.android.support', module: 'support-vector-drawable'

从app目录中解析bitmap的坑

从drawable和raw下解析都会有放大或缩小,从assert下解析才能读原图大小.

bgimg0 = getImageFromAssetsFile("Cat_Blink/cat_blink0000.png");  
  
*  
   * 从Assets中读取图片  
   */  
  private Bitmap getImageFromAssetsFile(String fileName)  
  {  
      Bitmap image = null;  
      AssetManager am = getResources().getAssets();  
      try  
      {  
          InputStream is = am.open(fileName);  
          image = BitmapFactory.decodeStream(is);  
          is.close();  
      }  
      catch (IOException e)  
      {  
          e.printStackTrace();  
      }  
  
      return image;  
  
  }  

viewpager的indicator选型

https://github.com/hackware1993/MagicIndicator