private void insertWindowFocusChangeMethod(ClassVisitor cv) {

MethodVisitor methodVisitor = cv.visitMethod(Opcodes.ACC_PUBLIC, TraceBuildConstants.MATRIX_TRACE_ON_WINDOW_FOCUS_METHOD,

TraceBuildConstants.MATRIX_TRACE_ON_WINDOW_FOCUS_METHOD_ARGS, null, null);

methodVisitor.visitCode();

methodVisitor.visitVarInsn(Opcodes.ALOAD, 0);

methodVisitor.visitVarInsn(Opcodes.ILOAD, 1);

methodVisitor.visitMethodInsn(Opcodes.INVOKESPECIAL, TraceBuildConstants.MATRIX_TRACE_ACTIVITY_CLASS, TraceBuildConstants.MATRIX_TRACE_ON_WINDOW_FOCUS_METHOD,

TraceBuildConstants.MATRIX_TRACE_ON_WINDOW_FOCUS_METHOD_ARGS, false);

traceWindowFocusChangeMethod(methodVisitor);

methodVisitor.visitInsn(Opcodes.RETURN);

methodVisitor.visitMaxs(2, 2);

methodVisitor.visitEnd(http://www.amjmh.com/v/);

}