从图库中选取图片并应用效果工厂效果

Question

我从以下博客文章中获得效果工厂教程：http://grishma102.blogspot.in/2013/10/apply-effects-on-image-using-effects.html 在上面的帖子中，drawable是静态的，并且从drawable资源中挑选出来，我想从设备库中选择资源并应用对它的影响，我必须在上述博客文章代码中做出什么改变才能实现。

Answer 1

创建一个Intent挑选的图像从画廊这样

创建一个全局变量

private int OPEN_GALLERY = 101

调用下面的意图上的按钮或某事的点击。

Intent intent = new Intent(
             Intent.ACTION_PICK, 
             android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI); 
           intent.setType("image/*"); 
           startActivityForResult(
             Intent.createChooser(intent, "Select Picture"), 
             OPEN_GALLERY); 

获取使用onActivityResult()

@Override 
public void onActivityResult(int requestCode, int resultCode, Intent data) { 
    super.onActivityResult(requestCode, resultCode, data); 
    switch (requestCode) { 


     case OPEN_GALLERY: 
      if (data != null) { 


       try { 
        Uri selectedImage = data.getData(); 
        String[] filePath = {MediaStore.Images.Media.DATA}; 
        Cursor c = getApplicationContext().getContentResolver().query(
          selectedImage, filePath, null, null, null); 
        c.moveToFirst(); 
        int columnIndex = c.getColumnIndex(filePath[0]); 
        String picturePath = c.getString(columnIndex); 
        c.close(); 

        BitmapFactory.Options options = new BitmapFactory.Options(); 
        Bitmap bm = BitmapFactory.decodeFile(picturePath,options); 

        //Pass bitmap to loadtextures method 
        loadTextures(bm); 


       } catch (Exception e) { 
        // TODO Auto-generated catch block 
        e.printStackTrace(); 
       } 
       break; 

      } 
    } 
} 

通行证位图所选图像到loadTextures()方法这样

private void loadTextures(Bitmap bm) { 
// Generate textures 
GLES20.glGenTextures(2, mTextures, 0); 
// Load input bitmap 
Bitmap bitmap = bm; 
mImageWidth = bitmap.getWidth(); 
mImageHeight = bitmap.getHeight(); 
mTexRenderer.updateTextureSize(mImageWidth, mImageHeight); 
// Upload to texture 
GLES20.glBindTexture(GLES20.GL_TEXTURE_2D, mTextures[0]); 
GLUtils.texImage2D(GLES20.GL_TEXTURE_2D, 0, bitmap, 0); 
// Set texture parameters 
GLToolbox.initTexParams(); 
}