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Updating texture using glTexImage2D(..) in OpenglES2 [Android]

GLES20.glGenTextures ( 1, textureId, 0 );

GLES20.glBindTexture ( GLES20.GL_TEXTURE_2D, textureId[0] );

GLES20.glTexImage2D ( GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGB, bitmap.getWidth(), bitmap.getHeight(), 0,GLES20.GL_RGB, GLES20.GL_UNSIGNED_BYTE, byteBuffer );|

GLES20.glBindTexture ( GLES20.GL_TEXTURE_2D, 0 );

       

GLES20.glBindTexture ( GLES20.GL_TEXTURE_2D, textureId[0] );

GLES20.glTexImage2D ( GLES20.GL_TEXTURE_2D, 0, GLES20.GL_RGB, bitmap.getWidth(), bitmap.getHeight(), 0,GLES20.GL_RGB, GLES20.GL_UNSIGNED_BYTE, byteBuffer );|

GLES20.glBindTexture ( GLES20.GL_TEXTURE_2D, 0 );